1News for the tz database 2 3Release 2016e - 2016-06-14 08:46:16 -0700 4 5 Changes affecting future time stamps 6 7 Africa/Cairo observes DST in 2016 from July 7 to the end of October. 8 Guess October 27 and 24:00 transitions. (Thanks to Steffen Thorsen.) 9 For future years, guess April's last Thursday to October's last 10 Thursday except for Ramadan. 11 12 Changes affecting past time stamps 13 14 Locations while uninhabited now use '-00', not 'zzz', as a 15 placeholder time zone abbreviation. This is inspired by Internet 16 RFC 3339 and is more consistent with numeric time zone 17 abbreviations already used elsewhere. The change affects several 18 arctic and antarctic locations, e.g., America/Cambridge_Bay before 19 1920 and Antarctica/Troll before 2005. 20 21 Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was 22 at 03:00, not 23:00 the previous day. (Thanks to Michael Deckers.) 23 24 Changes to code 25 26 zic now outputs a dummy transition at time 2**31 - 1 in zones 27 whose POSIX-style TZ strings contain a '<'. This mostly works 28 around Qt bug 53071 <https://bugreports.qt.io/browse/QTBUG-53071>. 29 (Thanks to Zhanibek Adilbekov for reporting the Qt bug.) 30 31 Changes affecting documentation and commentary 32 33 tz-link.htm says why governments should give plenty of notice for 34 time zone or DST changes, and refers to Matt Johnson's blog post. 35 36 tz-link.htm mentions Tzdata for Elixir. (Thanks to Matt Johnson.) 37 38 39Release 2016d - 2016-04-17 22:50:29 -0700 40 41 Changes affecting future time stamps 42 43 America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30. 44 (Thanks to Alexander Krivenyshev for the heads-up.) 45 46 Asia/Magadan switches from +10 to +11 on 2016-04-24 at 02:00. 47 (Thanks to Alexander Krivenyshev and Matt Johnson.) 48 49 New zone Asia/Tomsk, split off from Asia/Novosibirsk. It covers 50 Tomsk Oblast, Russia, which switches from +06 to +07 on 2016-05-29 51 at 02:00. (Thanks to Stepan Golosunov.) 52 53 Changes affecting past time stamps 54 55 New zone Europe/Kirov, split off from Europe/Volgograd. It covers 56 Kirov Oblast, Russia, which switched from +04/+05 to +03/+04 on 57 1989-03-26 at 02:00, roughly a year after Europe/Volgograd made 58 the same change. (Thanks to Stepan Golosunov.) 59 60 Russia and nearby locations had daylight-saving transitions on 61 1992-03-29 at 02:00 and 1992-09-27 at 03:00, instead of on 62 1992-03-28 at 23:00 and 1992-09-26 at 23:00. (Thanks to Stepan 63 Golosunov.) 64 65 Many corrections to historical time in Kazakhstan from 1991 66 through 2005. (Thanks to Stepan Golosunov.) Replace Kazakhstan's 67 invented time zone abbreviations with numeric abbreviations. 68 69 Changes to commentary 70 71 Mention Internet RFCs 7808 (TZDIST) and 7809 (CalDAV time zone references). 72 73 74Release 2016c - 2016-03-23 00:51:27 -0700 75 76 Changes affecting future time stamps 77 78 Azerbaijan no longer observes DST. (Thanks to Steffen Thorsen.) 79 80 Chile reverts from permanent to seasonal DST. (Thanks to Juan 81 Correa for the heads-up, and to Tim Parenti for corrections.) 82 Guess that future transitions are August's and May's second 83 Saturdays at 24:00 mainland time. Also, call the period from 84 2014-09-07 through 2016-05-14 daylight saving time instead of 85 standard time, as that seems more appropriate now. 86 87 Changes affecting past time stamps 88 89 Europe/Kaliningrad and Europe/Vilnius changed from +03/+04 to 90 +02/+03 on 1989-03-26, not 1991-03-31. Europe/Volgograd changed 91 from +04/+05 to +03/+04 on 1988-03-27, not 1989-03-26. 92 (Thanks to Stepan Golosunov.) 93 94 Changes to commentary 95 96 Several updates and URLs for historical and proposed Russian changes. 97 (Thanks to Stepan Golosunov, Matt Johnson, and Alexander Krivenyshev.) 98 99 100Release 2016b - 2016-03-12 17:30:14 -0800 101 102 Compatibility note 103 104 Starting with release 2016b, some data entries cause zic implementations 105 derived from tz releases 2005j through 2015e to issue warnings like 106 "time zone abbreviation differs from POSIX standard (+03)". 107 These warnings should not otherwise affect zic's output and can safely be 108 ignored on today's platforms, as the warnings refer to a restriction in 109 POSIX.1-1988 that was removed in POSIX.1-2001. One way to suppress the 110 warnings is to upgrade to zic derived from tz releases 2015f and later. 111 112 Changes affecting future time stamps 113 114 New zones Europe/Astrakhan and Europe/Ulyanovsk for Astrakhan and 115 Ulyanovsk Oblasts, Russia, both of which will switch from +03 to +04 on 116 2016-03-27 at 02:00 local time. They need distinct zones since their 117 post-1970 histories disagree. New zone Asia/Barnaul for Altai Krai and 118 Altai Republic, Russia, which will switch from +06 to +07 on the same date 119 and local time. The Astrakhan change is already official; the others have 120 passed the first reading in the State Duma and are extremely likely. 121 Also, Asia/Sakhalin moves from +10 to +11 on 2016-03-27 at 02:00. 122 (Thanks to Alexander Krivenyshev for the heads-up, and to Matt Johnson 123 and Stepan Golosunov for followup.) 124 125 As a trial of a new system that needs less information to be made up, 126 the new zones use numeric time zone abbreviations like "+04" 127 instead of invented abbreviations like "ASTT". 128 129 Haiti will not observe DST in 2016. (Thanks to Jean Antoine via 130 Steffen Thorsen.) 131 132 Palestine's spring-forward transition on 2016-03-26 is at 01:00, not 00:00. 133 (Thanks to Hannah Kreitem.) Guess future transitions will be March's last 134 Saturday at 01:00, not March's last Friday at 24:00. 135 136 Changes affecting past time stamps 137 138 Europe/Chisinau observed DST during 1990, and switched from +04 to 139 +03 at 1990-05-06 02:00, instead of switching from +03 to +02. 140 (Thanks to Stepan Golosunov.) 141 142 1991 abbreviations in Europe/Samara should be SAMT/SAMST, not 143 KUYT/KUYST. (Thanks to Stepan Golosunov.) 144 145 Changes to code 146 147 tzselect's diagnostics and checking, and checktab.awk's checking, 148 have been improved. (Thanks to J William Piggott.) 149 150 tzcode now builds under MinGW. (Thanks to Ian Abbott and Esben Haabendal.) 151 152 tzselect now tests Julian-date TZ settings more accurately. 153 (Thanks to J William Piggott.) 154 155 Changes to commentary 156 157 Comments in zone tables have been improved. (Thanks to J William Piggott.) 158 159 tzselect again limits its menu comments so that menus fit on a 160 24x80 alphanumeric display. 161 162 A new web page tz-how-to.html. (Thanks to Bill Seymour.) 163 164 In the Theory file, the description of possible time zone abbreviations in 165 tzdata has been cleaned up, as the old description was unclear and 166 inconsistent. (Thanks to Alain Mouette for reporting the problem.) 167 168 169Release 2016a - 2016-01-26 23:28:02 -0800 170 171 Changes affecting future time stamps 172 173 America/Cayman will not observe daylight saving this year after all. 174 Revert our guess that it would. (Thanks to Matt Johnson.) 175 176 Asia/Chita switches from +0800 to +0900 on 2016-03-27 at 02:00. 177 (Thanks to Alexander Krivenyshev.) 178 179 Asia/Tehran now has DST predictions for the year 2038 and later, 180 to be March 21 00:00 to September 21 00:00. This is likely better 181 than predicting no DST, albeit off by a day every now and then. 182 183 Changes affecting past and future time stamps 184 185 America/Metlakatla switched from PST all year to AKST/AKDT on 186 2015-11-01 at 02:00. (Thanks to Steffen Thorsen.) 187 188 America/Santa_Isabel has been removed, and replaced with a 189 backward compatibility link to America/Tijuana. Its contents were 190 apparently based on a misreading of Mexican legislation. 191 192 Changes affecting past time stamps 193 194 Asia/Karachi's two transition times in 2002 were off by a minute. 195 (Thanks to Matt Johnson.) 196 197 Changes affecting build procedure 198 199 An installer can now combine leap seconds with use of the backzone file, 200 e.g., with 'make PACKRATDATA=backzone REDO=posix_right zones'. 201 The old 'make posix_packrat' rule is now marked as obsolescent. 202 (Thanks to Ian Abbott for an initial implementation.) 203 204 Changes affecting documentation and commentary 205 206 A new file LICENSE makes it easier to see that the code and data 207 are mostly public-domain. (Thanks to James Knight.) The three 208 non-public-domain files now use the current (3-clause) BSD license 209 instead of older versions of that license. 210 211 tz-link.htm mentions the BDE library (thanks to Andrew Paprocki), 212 CCTZ (thanks to Tim Parenti), TimeJones.com, and has a new section 213 on editing tz source files (with a mention of Sublime zoneinfo, 214 thanks to Gilmore Davidson). 215 216 The Theory and asia files now mention the 2015 book "The Global 217 Transformation of Time, 1870-1950", and cite a couple of reviews. 218 219 The America/Chicago entry now documents the informal use of US 220 central time in Fort Pierre, South Dakota. (Thanks to Rick 221 McDermid, Matt Johnson, and Steve Jones.) 222 223 224Release 2015g - 2015-10-01 00:39:51 -0700 225 226 Changes affecting future time stamps 227 228 Turkey's 2015 fall-back transition is scheduled for Nov. 8, not Oct. 25. 229 (Thanks to Fatih.) 230 231 Norfolk moves from +1130 to +1100 on 2015-10-04 at 02:00 local time. 232 (Thanks to Alexander Krivenyshev.) 233 234 Fiji's 2016 fall-back transition is scheduled for January 17, not 24. 235 (Thanks to Ken Rylander.) 236 237 Fort Nelson, British Columbia will not fall back on 2015-11-01. It has 238 effectively been on MST (-0700) since it advanced its clocks on 2015-03-08. 239 New zone America/Fort_Nelson. (Thanks to Matt Johnson.) 240 241 Changes affecting past time stamps 242 243 Norfolk observed DST from 1974-10-27 02:00 to 1975-03-02 02:00. 244 245 Changes affecting code 246 247 localtime no longer mishandles America/Anchorage after 2037. 248 (Thanks to Bradley White for reporting the bug.) 249 250 On hosts with signed 32-bit time_t, localtime no longer mishandles 251 Pacific/Fiji after 2038-01-16 14:00 UTC. 252 253 The localtime module allows the variables 'timezone', 'daylight', 254 and 'altzone' to be in common storage shared with other modules, 255 and declares them in case the system <time.h> does not. 256 (Problems reported by Kees Dekker.) 257 258 On platforms with tm_zone, strftime.c now assumes it is not NULL. 259 This simplifies the code and is consistent with zdump.c. 260 (Problem reported by Christos Zoulas.) 261 262 Changes affecting documentation 263 264 The tzfile man page now documents that transition times denote the 265 starts (not the ends) of the corresponding time periods. 266 (Ambiguity reported by Bill Seymour.) 267 268 269Release 2015f - 2015-08-10 18:06:56 -0700 270 271 Changes affecting future time stamps 272 273 North Korea switches to +0830 on 2015-08-15. (Thanks to Steffen Thorsen.) 274 The abbreviation remains "KST". (Thanks to Robert Elz.) 275 276 Uruguay no longer observes DST. (Thanks to Steffen Thorsen 277 and Pablo Camargo.) 278 279 Changes affecting past and future time stamps 280 281 Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC. 282 (Thanks to Roman Tudos.) 283 284 Changes affecting data format and code 285 286 zic's '-y YEARISTYPE' option is no longer documented. The TYPE 287 field of a Rule line should now be '-'; the old values 'even', 288 'odd', 'uspres', 'nonpres', 'nonuspres' were already undocumented. 289 Although the implementation has not changed, these features do not 290 work in the default installation, they are not used in the data, 291 and they are now considered obsolescent. 292 293 zic now checks that two rules don't take effect at the same time. 294 (Thanks to Jon Skeet and Arthur David Olson.) Constraints on 295 simultaneity are now documented. 296 297 The two characters '%z' in a zone format now stand for the UTC 298 offset, e.g., '-07' for seven hours behind UTC and '+0530' for 299 five hours and thirty minutes ahead. This better supports time 300 zone abbreviations conforming to POSIX.1-2001 and later. 301 302 Changes affecting installed data files 303 304 Comments for America/Halifax and America/Glace_Bay have been improved. 305 (Thanks to Brian Inglis.) 306 307 Data entries have been simplified for Atlantic/Canary, Europe/Simferopol, 308 Europe/Sofia, and Europe/Tallinn. This yields slightly smaller 309 installed data files for Europe/Simferopol and Europe/Tallinn. 310 It does not affect timestamps. (Thanks to Howard Hinnant.) 311 312 Changes affecting code 313 314 zdump and zic no longer warn about valid time zone abbreviations 315 like '-05'. 316 317 Some Visual Studio 2013 warnings have been suppressed. 318 (Thanks to Kees Dekker.) 319 320 'date' no longer sets the time of day and its -a, -d, -n and -t 321 options have been removed. Long obsolescent, the implementation 322 of these features had porting problems. Builders no longer need 323 to configure HAVE_ADJTIME, HAVE_SETTIMEOFDAY, or HAVE_UTMPX_H. 324 (Thanks to Kees Dekker for pointing out the problem.) 325 326 Changes affecting documentation 327 328 The Theory file mentions naming issues earlier, as these seem to be 329 poorly publicized (thanks to Gilmore Davidson for reporting the problem). 330 331 tz-link.htm mentions Time Zone Database Parser (thanks to Howard Hinnant). 332 333 Mention that Herbert Samuel introduced the term "Summer Time". 334 335 336Release 2015e - 2015-06-13 10:56:02 -0700 337 338 Changes affecting future time stamps 339 340 Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00, 341 not 06-13 and 07-18 as we had guessed. (Thanks to Milamber.) 342 343 Assume Cayman Islands will observe DST starting next year, using US rules. 344 Although it isn't guaranteed, it is the most likely. 345 346 Changes affecting data format 347 348 The file 'iso3166.tab' now uses UTF-8, so that its entries can better 349 spell the names of Åland Islands, Côte d'Ivoire, and Réunion. 350 351 Changes affecting code 352 353 When displaying data, tzselect converts it to the current locale's 354 encoding if the iconv command works. (Problem reported by random832.) 355 356 tzselect no longer mishandles Dominica, fixing a bug introduced 357 in Release 2014f. (Problem reported by Owen Leibman.) 358 359 zic -l no longer fails when compiled with -DTZDEFAULT=\"/etc/localtime\". 360 This fixes a bug introduced in Release 2014f. 361 (Problem reported by Leonardo Chiquitto.) 362 363 364Release 2015d - 2015-04-24 08:09:46 -0700 365 366 Changes affecting future time stamps 367 368 Egypt will not observe DST in 2015 and will consider canceling it 369 permanently. For now, assume no DST indefinitely. 370 (Thanks to Ahmed Nazmy and Tim Parenti.) 371 372 Changes affecting past time stamps 373 374 America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not 375 1966-07-01. Also, Yukon's time zone history is documented better. 376 (Thanks to Brian Inglis and Dennis Ferguson.) 377 378 Change affecting past and future time zone abbreviations 379 380 The abbreviations for Hawaii-Aleutian standard and daylight times 381 have been changed from HAST/HADT to HST/HDT, as per US Government 382 Printing Office style. This affects only America/Adak since 1983, 383 as America/Honolulu was already using the new style. 384 385 Changes affecting code 386 387 zic has some minor performance improvements. 388 389 390Release 2015c - 2015-04-11 08:55:55 -0700 391 392 Changes affecting future time stamps 393 394 Egypt's spring-forward transition is at 24:00 on April's last Thursday, 395 not 00:00 on April's last Friday. 2015's transition will therefore be on 396 Thursday, April 30 at 24:00, not Friday, April 24 at 00:00. Similar fixes 397 apply to 2026, 2037, 2043, etc. (Thanks to Steffen Thorsen.) 398 399 Changes affecting past time stamps 400 401 The following changes affect some pre-1991 Chile-related time stamps 402 in America/Santiago, Antarctica/Palmer, and Pacific/Easter. 403 404 The 1910 transition was January 10, not January 1. 405 406 The 1918 transition was September 10, not September 1. 407 408 The UTC-4 time observed from 1932 to 1942 is now considered to be 409 standard time, not year-round DST. 410 411 Santiago observed DST (UTC-3) from 1946-07-15 through 1946-08-31, 412 then reverted to standard time, then switched its time zone to 413 UTC-5 on 1947-04-01. 414 415 Assume transitions before 1968 were at 00:00, since we have no data 416 saying otherwise. 417 418 The spring 1988 transition was 1988-10-09, not 1988-10-02. 419 The fall 1990 transition was 1990-03-11, not 1990-03-18. 420 421 Assume no UTC offset change for Pacific/Easter on 1890-01-01, 422 and omit all transitions on Pacific/Easter from 1942 through 1946 423 since we have no data suggesting that they existed. 424 425 One more zone has been turned into a link, as it differed 426 from an existing zone only for older time stamps. As usual, 427 this change affects UTC offsets in pre-1970 time stamps only. 428 The zone's old contents have been moved to the 'backzone' file. 429 The affected zone is America/Montreal. 430 431 Changes affecting commentary 432 433 Mention the TZUpdater tool. 434 435 Mention "The Time Now". (Thanks to Brandon Ramsey.) 436 437 438Release 2015b - 2015-03-19 23:28:11 -0700 439 440 Changes affecting future time stamps 441 442 Mongolia will start observing DST again this year, from the last 443 Saturday in March at 02:00 to the last Saturday in September at 00:00. 444 (Thanks to Ganbold Tsagaankhuu.) 445 446 Palestine will start DST on March 28, not March 27. Also, 447 correct the fall 2014 transition from September 26 to October 24. 448 Adjust future predictions accordingly. (Thanks to Steffen Thorsen.) 449 450 Changes affecting past time stamps 451 452 The 1982 zone shift in Pacific/Easter has been corrected, fixing a 2015a 453 regression. (Thanks to Stuart Bishop for reporting the problem.) 454 455 Some more zones have been turned into links, when they differed 456 from existing zones only for older time stamps. As usual, 457 these changes affect UTC offsets in pre-1970 time stamps only. 458 Their old contents have been moved to the 'backzone' file. 459 The affected zones are: America/Antigua, America/Cayman, 460 Pacific/Midway, and Pacific/Saipan. 461 462 Changes affecting time zone abbreviations 463 464 Correct the 1992-2010 DST abbreviation in Volgograd from "MSK" to "MSD". 465 (Thanks to Hank W.) 466 467 Changes affecting code 468 469 Fix integer overflow bug in reference 'mktime' implementation. 470 (Problem reported by Jörg Richter.) 471 472 Allow -Dtime_tz=time_t compilations, and allow -Dtime_tz=... libraries 473 to be used in the same executable as standard-library time_t functions. 474 (Problems reported by Bradley White.) 475 476 Changes affecting commentary 477 478 Cite the recent Mexican decree changing Quintana Roo's time zone. 479 (Thanks to Carlos Raúl Perasso.) 480 481 Likewise for the recent Chilean decree. (Thanks to Eduardo Romero Urra.) 482 483 Update info about Mars time. 484 485 486Release 2015a - 2015-01-29 22:35:20 -0800 487 488 Changes affecting future time stamps 489 490 The Mexican state of Quintana Roo, represented by America/Cancun, 491 will shift from Central Time with DST to Eastern Time without DST 492 on 2015-02-01 at 02:00. (Thanks to Steffen Thorsen and Gwillim Law.) 493 494 Chile will not change clocks in April or thereafter; its new standard time 495 will be its old daylight saving time. This affects America/Santiago, 496 Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.) 497 498 New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49. 499 (Thanks to Tim Parenti.) 500 501 Changes affecting past time stamps 502 503 Iceland observed DST in 1919 and 1921, and its 1939 fallback 504 transition was Oct. 29, not Nov. 29. Remove incorrect data from 505 Shanks about time in Iceland between 1837 and 1908. 506 507 Some more zones have been turned into links, when they differed 508 from existing zones only for older time stamps. As usual, 509 these changes affect UTC offsets in pre-1970 time stamps only. 510 Their old contents have been moved to the 'backzone' file. 511 The affected zones are: Asia/Aden, Asia/Bahrain, Asia/Kuwait, 512 and Asia/Muscat. 513 514 Changes affecting code 515 516 tzalloc now scrubs time zone abbreviations compatibly with the way 517 that tzset always has, by replacing invalid bytes with '_' and by 518 shortening too-long abbreviations. 519 520 tzselect ports to POSIX awk implementations, no longer mishandles 521 POSIX TZ settings when GNU awk is used, and reports POSIX TZ 522 settings to the user. (Thanks to Stefan Kuhn.) 523 524 Changes affecting build procedure 525 526 'make check' now checks for links to links in the data. 527 One such link (for Africa/Asmera) has been fixed. 528 (Thanks to Stephen Colebourne for pointing out the problem.) 529 530 Changes affecting commentary 531 532 The leapseconds file commentary now mentions the expiration date. 533 (Problem reported by Martin Burnicki.) 534 535 Update Mexican Library of Congress URL. 536 537 538Release 2014j - 2014-11-10 17:37:11 -0800 539 540 Changes affecting current and future time stamps 541 542 Turks & Caicos' switch from US eastern time to UTC-4 year-round 543 did not occur on 2014-11-02 at 02:00. It's currently scheduled 544 for 2015-11-01 at 02:00. (Thanks to Chris Walton.) 545 546 Changes affecting past time stamps 547 548 Many pre-1989 time stamps have been corrected for Asia/Seoul and 549 Asia/Pyongyang, based on sources for the Korean-language Wikipedia 550 entry for time in Korea. (Thanks to Sanghyuk Jung.) Also, no 551 longer guess that Pyongyang mimicked Seoul time after World War II, 552 as this is politically implausible. 553 554 Some more zones have been turned into links, when they differed 555 from existing zones only for older time stamps. As usual, 556 these changes affect UTC offsets in pre-1970 time stamps only. 557 Their old contents have been moved to the 'backzone' file. 558 The affected zones are: Africa/Addis_Ababa, Africa/Asmara, 559 Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala, 560 Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and 561 Indian/Mayotte. 562 563 Changes affecting commentary 564 565 The commentary is less enthusiastic about Shanks as a source, 566 and is more careful to distinguish UT from UTC. 567 568 569Release 2014i - 2014-10-21 22:04:57 -0700 570 571 Changes affecting future time stamps 572 573 Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00. 574 (Thanks to Ken Rylander for the heads-up.) Guess that future 575 years will use a similar pattern. 576 577 A new Zone Pacific/Bougainville, for the part of Papua New Guinea 578 that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00. 579 (Thanks to Kiley Walbom for the heads-up.) 580 581 Changes affecting time zone abbreviations 582 583 Since Belarus is not changing its clocks even though Moscow is, 584 the time zone abbreviation in Europe/Minsk is changing from FET 585 to its more-traditional value MSK on 2014-10-26 at 01:00. 586 (Thanks to Alexander Bokovoy for the heads-up about Belarus.) 587 588 The new abbreviation IDT stands for the pre-1976 use of UT+8 in 589 Indochina, to distinguish it better from ICT (UT+7). 590 591 Changes affecting past time stamps 592 593 Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976 594 (thanks to Trần Ngọc Quân for an indirect pointer to Trần Tiến Bình's 595 authoritative book). Asia/Ho_Chi_Minh has been added to 596 zone1970.tab, to give tzselect users in Vietnam two choices, 597 since north and south Vietnam disagreed after our 1970 cutoff. 598 599 Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as 600 they differed from existing zones only for older time stamps. As 601 usual, these changes affect pre-1970 time stamps only. Their old 602 contents have been moved to the 'backzone' file. 603 604 Changes affecting code 605 606 The time-related library functions now set errno on failure, and 607 some crashes in the new tzalloc-related library functions have 608 been fixed. (Thanks to Christos Zoulas for reporting most of 609 these problems and for suggesting fixes.) 610 611 If USG_COMPAT is defined and the requested time stamp is standard time, 612 the tz library's localtime and mktime functions now set the extern 613 variable timezone to a value appropriate for that time stamp; and 614 similarly for ALTZONE, daylight saving time, and the altzone variable. 615 This change is a companion to the tzname change in 2014h, and is 616 designed to make timezone and altzone more compatible with tzname. 617 618 The tz library's functions now set errno to EOVERFLOW if they fail 619 because the result cannot be represented. ctime and ctime_r now 620 return NULL and set errno when a time stamp is out of range, rather 621 than having undefined behavior. 622 623 Some bugs associated with the new 2014g functions have been fixed. 624 This includes a bug that largely incapacitated the new functions 625 time2posix_z and posix2time_z. (Thanks to Christos Zoulas.) 626 It also includes some uses of uninitialized variables after tzalloc. 627 The new code uses the standard type 'ssize_t', which the Makefile 628 now gives porting advice about. 629 630 Changes affecting commentary 631 632 Updated URLs for NRC Canada (thanks to Matt Johnson and Brian Inglis). 633 634 635Release 2014h - 2014-09-25 18:59:03 -0700 636 637 Changes affecting past time stamps 638 639 America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28. 640 641 Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01, 642 not 1920-01-06. The old entry was based on a misinterpretation of Shanks. 643 644 Some more zones have been turned into links, when they differed 645 from existing zones only for older time stamps. As usual, 646 these changes affect UTC offsets in pre-1970 time stamps only. 647 Their old contents have been moved to the 'backzone' file. 648 The affected zones are: Africa/Blantyre, Africa/Bujumbura, 649 Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi, 650 Africa/Lusaka, Africa/Maseru, and Africa/Mbabane. 651 652 Changes affecting code 653 654 zdump -V and -v now output gmtoff= values on all platforms, 655 not merely on platforms defining TM_GMTOFF. 656 657 The tz library's localtime and mktime functions now set tzname to a value 658 appropriate for the requested time stamp, and zdump now uses this 659 on platforms not defining TM_ZONE, fixing a 2014g regression. 660 (Thanks to Tim Parenti for reporting the problem.) 661 662 The tz library no longer sets tzname if localtime or mktime fails. 663 664 zdump -c no longer mishandles transitions near year boundaries. 665 (Thanks to Tim Parenti for reporting the problem.) 666 667 An access to uninitalized data has been fixed. 668 (Thanks to Jörg Richter for reporting the problem.) 669 670 When THREAD_SAFE is defined, the code ports to the C11 memory model. 671 A memory leak has been fixed if ALL_STATE and THREAD_SAFE are defined 672 and two threads race to initialize data used by gmtime-like functions. 673 (Thanks to Andy Heninger for reporting the problems.) 674 675 Changes affecting build procedure 676 677 'make check' now checks better for properly-sorted data. 678 679 Changes affecting documentation and commentary 680 681 zdump's gmtoff=N output is now documented, and its isdst=D output 682 is now documented to possibly output D values other than 0 or 1. 683 684 zdump -c's treatment of years is now documented to use the 685 Gregorian calendar and Universal Time without leap seconds, 686 and its behavior at cutoff boundaries is now documented better. 687 (Thanks to Arthur David Olson and Tim Parenti for reporting the problems.) 688 689 Programs are now documented to use the proleptic Gregorian calendar. 690 (Thanks to Alan Barrett for the suggestion.) 691 692 Fractional-second GMT offsets have been documented for civil time 693 in 19th-century Chennai, Jakarta, and New York. 694 695 696Release 2014g - 2014-08-28 12:31:23 -0700 697 698 Changes affecting future time stamps 699 700 Turks & Caicos is switching from US eastern time to UTC-4 year-round, 701 modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00. 702 [As noted in 2014j, this switch was later delayed.] 703 704 Changes affecting past time stamps 705 706 Time in Russia or the USSR before 1926 or so has been corrected by 707 a few seconds in the following zones: Asia/Irkutsk, 708 Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi, 709 Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For 710 Asia/Yekaterinburg the correction is a few minutes. (Thanks to 711 Vladimir Karpinsky.) 712 713 The Portuguese decree of 1911-05-26 took effect on 1912-01-01. 714 This affects 1911 time stamps in Africa/Bissau, Africa/Luanda, 715 Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912 716 GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32. 717 (Thanks to Stephen Colebourne for pointing to the decree.) 718 719 Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59. 720 721 A new file 'backzone' contains data which may appeal to 722 connoisseurs of old time stamps, although it is out of scope for 723 the tz database, is often poorly sourced, and contains some data 724 that is known to be incorrect. The new file is not recommended 725 for ordinary use and its entries are not installed by default. 726 (Thanks to Lester Caine for the high-quality Jersey, Guernsey, and 727 Isle of Man entries.) 728 729 Some more zones have been turned into links, when they differed 730 from existing zones only for older time stamps. As usual, 731 these changes affect UTC offsets in pre-1970 time stamps only. 732 Their old contents have been moved to the 'backzone' file. 733 The affected zones are: Africa/Bangui, Africa/Brazzaville, 734 Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda, 735 Africa/Malabo, Africa/Niamey, and Africa/Porto-Novo. 736 737 Changes affecting code 738 739 Unless NETBSD_INSPIRED is defined to 0, the tz library now 740 supplies functions for creating and using objects that represent 741 time zones. The new functions are tzalloc, tzfree, localtime_rz, 742 mktime_z, and (if STD_INSPIRED is also defined) posix2time_z and 743 time2posix_z. They are intended for performance: for example, 744 localtime_rz (unlike localtime_r) is trivially thread-safe without 745 locking. (Thanks to Christos Zoulas for proposing NetBSD-inspired 746 functions, and to Alan Barrett and Jonathan Lennox for helping to 747 debug the change.) 748 749 zdump now builds with the tz library unless USE_LTZ is defined to 0, 750 This lets zdump use tz features even if the system library lacks them. 751 To build zdump with the system library, use 'make CFLAGS=-DUSE_LTZ=0 752 TZDOBJS=zdump.o CHECK_TIME_T_ALTERNATIVES='. 753 754 zdump now uses localtime_rz if available, as it's significantly faster, 755 and it can help zdump better diagnose invalid time zone names. 756 Define HAVE_LOCALTIME_RZ to 0 to suppress this. HAVE_LOCALTIME_RZ 757 defaults to 1 if NETBSD_INSPIRED && USE_LTZ. When localtime_rz is 758 not available, zdump now uses localtime_r and tzset if available, 759 as this is a bit cleaner and faster than plain localtime. Compile 760 with -DHAVE_LOCALTIME_R=0 and/or -DHAVE_TZSET=0 if your system 761 lacks these two functions. 762 763 If THREAD_SAFE is defined to 1, the tz library is now thread-safe. 764 Although not needed for tz's own applications, which are single-threaded, 765 this supports POSIX better if the tz library is used in multithreaded apps. 766 767 Some crashes have been fixed when zdump or the tz library is given 768 invalid or outlandish input. 769 770 The tz library no longer mishandles leap seconds on platforms with 771 unsigned time_t in time zones that lack ordinary transitions after 1970. 772 773 The tz code now attempts to infer TM_GMTOFF and TM_ZONE if not 774 already defined, to make it easier to configure on common platforms. 775 Define NO_TM_GMTOFF and NO_TM_ZONE to suppress this. 776 777 Unless the new macro UNINIT_TRAP is defined to 1, the tz code now 778 assumes that reading uninitialized memory yields garbage values 779 but does not cause other problems such as traps. 780 781 If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now 782 more likely to guess right for ambiguous time stamps near 783 transitions where tm_isdst does not change. 784 785 If HAVE_STRFTIME_L is defined to 1, the tz library now defines 786 strftime_l for compatibility with recent versions of POSIX. 787 Only the C locale is supported, though. HAVE_STRFTIME_L defaults 788 to 1 on recent POSIX versions, and to 0 otherwise. 789 790 tzselect -c now uses a hybrid distance measure that works better 791 in Africa. (Thanks to Alan Barrett for noting the problem.) 792 793 The C source code now ports to NetBSD when GCC_DEBUG_FLAGS is used, 794 or when time_tz is defined. 795 796 When HAVE_UTMPX_H is set the 'date' command now builds on systems 797 whose <utmpx.h> file does not define WTMPX_FILE, and when setting 798 the date it updates the wtmpx file if _PATH_WTMPX is defined. 799 This affects GNU/Linux and similar systems. 800 801 For easier maintenance later, some C code has been simplified, 802 some lint has been removed, and the code has been tweaked so that 803 plain 'make' is more likely to work. 804 805 The C type 'bool' is now used for boolean values, instead of 'int'. 806 807 The long-obsolete LOCALE_HOME code has been removed. 808 809 The long-obsolete 'gtime' function has been removed. 810 811 Changes affecting build procedure 812 813 'zdump' no longer links in ialloc.o, as it's not needed. 814 815 'make check_time_t_alternatives' no longer assumes GNU diff. 816 817 Changes affecting distribution tarballs 818 819 The files checktab.awk and zoneinfo2tdf.pl are now distributed in 820 the tzdata tarball instead of the tzcode tarball, since they help 821 maintain the data. The NEWS and Theory files are now also 822 distributed in the tzdata tarball, as they're relevant for data. 823 (Thanks to Alan Barrett for pointing this out.) Also, the 824 leapseconds.awk file is no longer distributed in the tzcode 825 tarball, since it belongs in the tzdata tarball (where 2014f 826 inadvertently also distributed it). 827 828 Changes affecting documentation and commentary 829 830 A new file CONTRIBUTING is distributed. (Thanks to Tim Parenti for 831 suggesting a CONTRIBUTING file, and to Tony Finch and Walter Harms 832 for debugging it.) 833 834 The man pages have been updated to use function prototypes, 835 to document thread-safe variants like localtime_r, and to document 836 the NetBSD-inspired functions tzalloc, tzfree, localtime_rz, and 837 mktime_z. 838 839 The fields in Link lines have been renamed to be more descriptive 840 and more like the parameters of 'ln'. LINK-FROM has become TARGET, 841 and LINK-TO has become LINK-NAME. 842 843 tz-link.htm mentions the IETF's tzdist working group; Windows 844 Runtime etc. (thanks to Matt Johnson); and HP-UX's tztab. 845 846 Some broken URLs have been fixed in the commentary. (Thanks to 847 Lester Caine.) 848 849 Commentary about Philippines DST has been updated, and commentary 850 on pre-1970 time in India has been added. 851 852 853Release 2014f - 2014-08-05 17:42:36 -0700 854 855 Changes affecting future time stamps 856 857 Russia will subtract an hour from most of its time zones on 2014-10-26 858 at 02:00 local time. (Thanks to Alexander Krivenyshev.) 859 There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky 860 Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug 861 (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast 862 (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic 863 (Europe/Samara) are not changing their clocks. The changed zones are 864 Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd, 865 Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk, 866 Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga, 867 Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours 868 subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected, 869 but not its UTC offset. Two zones are added: Asia/Chita (split 870 from Asia/Yakutsk, and also with two hours subtracted) and 871 Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour 872 subtracted). (Thanks to Tim Parenti for much of the above.) 873 874 Changes affecting time zone abbreviations 875 876 Australian eastern time zone abbreviations are now AEST/AEDT not EST, 877 and similarly for the other Australian zones. That is, for eastern 878 standard and daylight saving time the abbreviations are AEST and AEDT 879 instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT, 880 and AWST/AWDT are now used instead of the former CST, CWST, and WST. 881 This change does not affect UTC offsets, only time zone abbreviations. 882 (Thanks to Rich Tibbett and many others.) 883 884 Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UTC+7) 885 effective 2014-10-26 at 02:00 local time. 886 887 The time zone abbreviation for Xinjiang Time (observed in Ürümqi) 888 has been changed from URUT to XJT. (Thanks to Luther Ma.) 889 890 Prefer MSK/MSD for Moscow time in Russia, even in other cities. 891 Similarly, prefer EET/EEST for eastern European time in Russia. 892 893 Change time zone abbreviations in (western) Samoa to use "ST" and 894 "DT" suffixes, as this is more likely to match common practice. 895 Prefix "W" to (western) Samoa time when its standard-time offset 896 disagrees with that of American Samoa. 897 898 America/Metlakatla now uses PST, not MeST, to abbreviate its time zone. 899 900 Time zone abbreviations have been updated for Japan's two time 901 zones used 1896-1937. JWST now stands for Western Standard 902 Time, and JCST for Central Standard Time (formerly this was CJT). 903 These abbreviations are now used for time in Korea, Taiwan, 904 and Sakhalin while controlled by Japan. 905 906 Changes affecting past time stamps 907 908 China's five zones have been simplified to two, since the post-1970 909 differences in the other three seem to have been imaginary. The 910 zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been 911 removed; backwards-compatibility links still work, albeit with 912 different behaviors for time stamps before May 1980. Asia/Urumqi's 913 1980 transition to UTC+8 has been removed, so that it is now at 914 UTC+6 and not UTC+8. (Thanks to Luther Ma and to Alois Treindl; 915 Treindl sent helpful translations of two papers by Guo Qingsheng.) 916 917 Some zones have been turned into links, when they differed from existing 918 zones only for older UTC offsets where data entries were likely invented. 919 These changes affect UTC offsets in pre-1970 time stamps only. This is 920 similar to the change in release 2013e, except this time for western 921 Africa. The affected zones are: Africa/Bamako, Africa/Banjul, 922 Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome, 923 Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and 924 Atlantic/St_Helena. This also affects the backwards-compatibility 925 link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne, 926 Tim Parenti, and David Patte for reporting problems in earlier 927 versions of this change.) 928 929 Asia/Shanghai's pre-standard-time UT offset has been changed from 930 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its 931 transition to standard time has been changed from 1928 to 1901. 932 933 Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01, 934 then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945. 935 In 1946 it observed DST from 05-15 through 09-30; in 1947 936 from 04-15 through 10-31; and in 1979 from 07-01 through 09-30. 937 (Thanks to Yu-Cheng Chuang.) 938 939 Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950. 940 941 Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not 942 10-03 at 00:00. (Thanks to Konstantin Hyppönen.) 943 944 Pacific/Pago_Pago has been changed from UTC-11:30 to UTC-11 for the period 945 from 1911 to 1950. 946 947 Pacific/Chatham has been changed to New Zealand standard time plus 948 45 minutes for the period before 1957, reflecting a 1956 remark in 949 the New Zealand parliament. 950 951 Europe/Budapest has several pre-1946 corrections: in 1918 the transition 952 out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in 953 1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08 954 not 04-06 at 02:00; and there was no DST in 1920. 955 956 Africa/Accra is now assumed to have observed DST from 1920 through 1935. 957 958 Time in Russia before 1927 or so has been corrected by a few seconds in 959 the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi, 960 Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and 961 Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0 962 point. (Thanks to Vladimir Karpinsky for the Moscow changes.) 963 964 Changes affecting data format 965 966 A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data. 967 The new file's extended format allows multiple country codes per zone. 968 The older file is still installed but is deprecated; its format is 969 not changing and it will still be distributed for a while, but new 970 applications should use the new file. 971 972 The new file format simplifies maintenance of obscure locations. 973 To test this, it adds coverage for the Crozet Islands and the 974 Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.) 975 976 The file 'iso3166.tab' is planned to switch from ASCII to UTF-8. 977 It is still ASCII now, but commentary about the switch has been added. 978 The new file 'zone1970.tab' already uses UTF-8. 979 980 Changes affecting code 981 982 'localtime', 'mktime', etc. now use much less stack space if ALL_STATE 983 is defined. (Thanks to Elliott Hughes for reporting the problem.) 984 985 'zic' no longer mishandles input when ignoring case in locales that 986 are not compatible with English, e.g., unibyte Turkish locales when 987 compiled with HAVE_GETTEXT. 988 989 Error diagnostics of 'zic' and 'yearistype' have been reworded so that 990 they no longer use ASCII '-' as if it were a dash. 991 992 'zic' now rejects output file names that contain '.' or '..' components. 993 (Thanks to Tim Parenti for reporting the problem.) 994 995 'zic -v' now warns about output file names that do not follow 996 POSIX rules, or that contain a digit or '.'. (Thanks to Arthur 997 David Olson for starting the ball rolling on this.) 998 999 Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0. 1000 1001 Changes affecting build procedure 1002 1003 'zic' no longer links in localtime.o and asctime.o, as they're not needed. 1004 (Thanks to John Cochran.) 1005 1006 Changes affecting documentation and commentary 1007 1008 The 'Theory' file documents legacy names, the longstanding 1009 exceptions to the POSIX-inspired file name rules. 1010 1011 The 'zic' documentation clarifies the role of time types when 1012 interpreting dates. (Thanks to Arthur David Olson.) 1013 1014 Documentation and commentary now prefer UTF-8 to US-ASCII, 1015 allowing the use of proper accents in foreign words and names. 1016 Code and data have not changed because of this. (Thanks to 1017 Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug 1018 this.) 1019 1020 Non-HTML documentation and commentary now use plain-text URLs instead of 1021 HTML insertions, and are more consistent about bracketing URLs when they 1022 are not already surrounded by white space. (Thanks to suggestions by 1023 Steffen Nurpmeso.) 1024 1025 There is new commentary about Xujiahui Observatory, the five time-zone 1026 project in China from 1918 to 1949, timekeeping in Japanese-occupied 1027 Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the 1028 warlord Jin Shuren in the data. 1029 1030 Commentary about the coverage of each Russian zone has been standardized. 1031 (Thanks to Tim Parenti). 1032 1033 There is new commentary about contemporary timekeeping in Ethiopia. 1034 1035 Obsolete comments about a 2007 proposal for DST in Kuwait has been removed. 1036 1037 There is new commentary about time in Poland in 1919. 1038 1039 Proper credit has been given to DST inventor George Vernon Hudson. 1040 1041 Commentary about time in Metlakatla, AK and Resolute, NU has been 1042 improved, with a new source for the former. 1043 1044 In zone.tab, Pacific/Easter no longer mentions Salas y Gómez, as it 1045 is uninhabited. 1046 1047 Commentary about permanent Antarctic bases has been updated. 1048 1049 Several typos have been corrected. (Thanks to Tim Parenti for 1050 contributing some of these fixes.) 1051 1052 tz-link.htm now mentions the JavaScript libraries Moment Timezone, 1053 TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up 1054 from Matt Johnson.) Also, it mentions the Go 'latlong' package. 1055 (Thanks to a heads-up from Dirkjan Ochtman.) 1056 1057 The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998 1058 have been removed. These obsolescent US Naval Observatory entries were no 1059 longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.) 1060 1061 1062Release 2014e - 2014-06-12 21:53:52 -0700 1063 1064 Changes affecting near-future time stamps 1065 1066 Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. 1067 (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily 1068 switch to standard time at 24:00 the last Thursday before Ramadan, and 1069 back to DST at 00:00 the first Friday after Ramadan. 1070 1071 Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks 1072 to Milamber Space Network.) Guess that from 2015 on Morocco will 1073 temporarily switch to standard time at 03:00 the last Saturday before 1074 Ramadan, and back to DST at 02:00 the first Saturday after Ramadan. 1075 1076 Changes affecting past time stamps 1077 1078 The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of 1079 "MSD" for Moscow's double daylight time in summer 1921. Also, a typo 1080 "VLASST" has been repaired to be "VLAST" for Vladivostok summer time 1081 in 1991. (Thanks to Hank W. for reporting the problems.) 1082 1083 Changes affecting commentary 1084 1085 tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the 1086 draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and 1087 removes stale pointers to World Time Explorer and WORLDTIME. 1088 1089 1090Release 2014d - 2014-05-27 21:34:40 -0700 1091 1092 Changes affecting code 1093 1094 zic no longer generates files containing time stamps before the Big Bang. 1095 This works around GNOME bug 730332 1096 <https://bugzilla.gnome.org/show_bug.cgi?id=730332>. 1097 (Thanks to Leonardo Chiquitto for reporting the bug, and to 1098 Arthur David Olson and James Cloos for suggesting improvements to the fix.) 1099 1100 Changes affecting documentation 1101 1102 tz-link.htm now mentions GNOME. 1103 1104 1105Release 2014c - 2014-05-13 07:44:13 -0700 1106 1107 Changes affecting near-future time stamps 1108 1109 Egypt observes DST starting 2014-05-15 at 24:00. 1110 (Thanks to Ahmad El-Dardiry and Gunther Vermier.) 1111 Details have not been announced, except that DST will not be observed 1112 during Ramadan. Guess that DST will stop during the same Ramadan dates as 1113 Morocco, and that Egypt's future spring and fall transitions will be the 1114 same as 2010 when it last observed DST, namely April's last Friday at 1115 00:00 to September's last Thursday at 23:00 standard time. Also, guess 1116 that Ramadan transitions will be at 00:00 standard time. 1117 1118 Changes affecting code 1119 1120 zic now generates transitions for minimum time values, eliminating guesswork 1121 when handling low-valued time stamps. (Thanks to Arthur David Olson.) 1122 1123 Port to Cygwin sans glibc. (Thanks to Arthur David Olson.) 1124 1125 Changes affecting commentary and documentation 1126 1127 Remove now-confusing comment about Jordan. (Thanks to Oleksii Nochovnyi.) 1128 1129 1130Release 2014b - 2014-03-24 21:28:50 -0700 1131 1132 Changes affecting near-future time stamps 1133 1134 Crimea switches to Moscow time on 2014-03-30 at 02:00 local time. 1135 (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU. 1136 1137 New entry for Troll station, Antarctica. (Thanks to Paul-Inge Flakstad and 1138 Bengt-Inge Larsson.) This is currently an approximation; a better version 1139 will require the zic and localtime fixes mentioned below, and the plan is 1140 to wait for a while until at least the zic fixes propagate. 1141 1142 Changes affecting code 1143 1144 'zic' and 'localtime' no longer reject locations needing four transitions 1145 per year for the foreseeable future. (Thanks to Andrew Main (Zefram).) 1146 Also, 'zic' avoids some unlikely failures due to integer overflow. 1147 1148 Changes affecting build procedure 1149 1150 'make check' now detects Rule lines defined but never used. 1151 The NZAQ rules, an instance of this problem, have been removed. 1152 1153 Changes affecting commentary and documentation 1154 1155 Fix Tuesday/Thursday typo in description of time in Israel. 1156 (Thanks to Bert Katz via Pavel Kharitonov and Mike Frysinger.) 1157 1158 Microsoft Windows 8.1 doesn't support tz database names. (Thanks 1159 to Donald MacQueen.) Instead, the Microsoft Windows Store app 1160 library supports them. 1161 1162 Add comments about Johnston Island time in the 1960s. 1163 (Thanks to Lyle McElhaney.) 1164 1165 Morocco's 2014 DST start will be as predicted. 1166 (Thanks to Sebastien Willemijns.) 1167 1168 1169Release 2014a - 2014-03-07 23:30:29 -0800 1170 1171 Changes affecting near-future time stamps 1172 1173 Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for 1174 the heads-up, and to Tim Parenti for simplifying the update.) 1175 1176 Changes affecting past time stamps 1177 1178 Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00. 1179 (Thanks to Steffen Thorsen.) 1180 1181 Ukraine switched from Moscow to Eastern European time on 1990-07-01 1182 (not 1992-01-01), and observed DST during the entire next winter. 1183 (Thanks to Vladimir in Moscow via Alois Treindl.) 1184 1185 In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03. 1186 (Thanks to Avigdor Finkelstein.) 1187 1188 Changes affecting code 1189 1190 A uninitialized-storage bug in 'localtime' has been fixed. 1191 (Thanks to Logan Chien.) 1192 1193 Changes affecting the build procedure 1194 1195 The settings for 'make check_web' now default to Ubuntu 13.10. 1196 1197 Changes affecting commentary and documentation 1198 1199 The boundary of the US Pacific time zone is given more accurately. 1200 (Thanks to Alan Mintz.) 1201 1202 Chile's 2014 DST will be as predicted. (Thanks to José Miguel Garrido.) 1203 1204 Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Raúl Perasso.) 1205 1206 Better descriptions of countries with same time zone history as 1207 Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.) 1208 1209 Several changes affect tz-link.htm, the main web page. 1210 1211 Mention Time.is (thanks to Even Scharning) and WX-now (thanks to 1212 David Braverman). 1213 1214 Mention xCal (Internet RFC 6321) and jCal. 1215 1216 Microsoft has some support for tz database names. 1217 1218 CLDR data formats include both XML and JSON. 1219 1220 Mention Maggiolo's map of solar vs standard time. 1221 (Thanks to Arthur David Olson.) 1222 1223 Mention TZ4Net. (Thanks to Matt Johnson.) 1224 1225 Mention the timezone-olson Haskell package. 1226 1227 Mention zeitverschiebung.net. (Thanks to Martin Jäger.) 1228 1229 Remove moribund links to daylight-savings-time.info and to 1230 Simple Timer + Clocks. 1231 1232 Update two links. (Thanks to Oscar van Vlijmen.) 1233 1234 Fix some formatting glitches, e.g., remove random newlines from 1235 abbr elements' title attributes. 1236 1237 1238Release 2013i - 2013-12-17 07:25:23 -0800 1239 1240 Changes affecting near-future time stamps: 1241 1242 Jordan switches back to standard time at 00:00 on December 20, 2013. 1243 The 2006-2011 transition schedule is planned to resume in 2014. 1244 (Thanks to Steffen Thorsen.) 1245 1246 Changes affecting past time stamps: 1247 1248 In 2004, Cuba began DST on March 28, not April 4. 1249 (Thanks to Steffen Thorsen.) 1250 1251 Changes affecting code 1252 1253 The compile-time flag NOSOLAR has been removed, as nowadays the 1254 benefit of slightly shrinking runtime table size is outweighed by the 1255 cost of disallowing potential future updates that exceed old limits. 1256 1257 Changes affecting documentation and commentary 1258 1259 The files solar87, solar88, and solar89 are no longer distributed. 1260 They were a negative experiment - that is, a demonstration that 1261 tz data can represent solar time only with some difficulty and error. 1262 Their presence in the distribution caused confusion, as Riyadh 1263 civil time was generally not solar time in those years. 1264 1265 tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.) 1266 1267 1268Release 2013h - 2013-10-25 15:32:32 -0700 1269 1270 Changes affecting current and future time stamps: 1271 1272 Libya has switched its time zone back to UTC+2 without DST, 1273 instead of UTC+1 with DST. (Thanks to Even Scharning.) 1274 1275 Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules. 1276 (Thanks to Gwillim Law.) 1277 1278 Changes affecting future time stamps: 1279 1280 Acre and (we guess) western Amazonas will switch from UTC-4 to UTC-5 1281 on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe. 1282 (Thanks to Steffen Thorsen.) 1283 1284 Add entries for DST transitions in Morocco in the year 2038. 1285 This avoids some year-2038 glitches introduced in 2013g. 1286 (Thanks to Yoshito Umaoka for reporting the problem.) 1287 1288 Changes affecting API 1289 1290 The 'tzselect' command no longer requires the 'select' command, 1291 and should now work with /bin/sh on more platforms. It also works 1292 around a bug in BusyBox awk before version 1.21.0. (Thanks to 1293 Patrick 'P. J.' McDermott and Alan Barrett.) 1294 1295 Changes affecting code 1296 1297 Fix localtime overflow bugs with 32-bit unsigned time_t. 1298 1299 zdump no longer assumes sscanf returns maximal values on overflow. 1300 1301 Changes affecting the build procedure 1302 1303 The builder can specify which programs to use, if any, instead of 1304 'ar' and 'ranlib', and libtz.a is now built locally before being 1305 installed. (Thanks to Michael Forney.) 1306 1307 A dependency typo in the 'zdump' rule has been fixed. 1308 (Thanks to Andrew Paprocki.) 1309 1310 The Makefile has been simplified by assuming that 'mkdir -p' and 'cp -f' 1311 work as specified by POSIX.2-1992 or later; this is portable nowadays. 1312 1313 'make clean' no longer removes 'leapseconds', since it's 1314 host-independent and is part of the distribution. 1315 1316 The unused makefile macros TZCSRCS, TZDSRCS, DATESRCS have been removed. 1317 1318 Changes affecting documentation and commentary 1319 1320 tz-link.htm now mentions TC TIMEZONE's draft time zone service protocol 1321 (thanks to Mike Douglass) and TimezoneJS.Date (thanks to Jim Fehrle). 1322 1323 Update URLs in tz-link page. Add URLs for Microsoft Windows, since 1324 8.1 introduces tz support. Remove URLs for Tru64 and UnixWare (no 1325 longer maintained) and for old advisories. SOFA now does C. 1326 1327Release 2013g - 2013-09-30 21:08:26 -0700 1328 1329 Changes affecting current and near-future time stamps 1330 1331 Morocco now observes DST from the last Sunday in March to the last 1332 Sunday in October, not April to September respectively. (Thanks 1333 to Steffen Thorsen.) 1334 1335 Changes affecting 'zic' 1336 1337 'zic' now runs on platforms that lack both hard links and symlinks. 1338 (Thanks to Theo Veenker for reporting the problem, for MinGW.) 1339 Also, fix some bugs on platforms that lack hard links but have symlinks. 1340 1341 'zic -v' again warns that Asia/Tehran has no POSIX environment variable 1342 to predict the far future, fixing a bug introduced in 2013e. 1343 1344 Changes affecting the build procedure 1345 1346 The 'leapseconds' file is again put into the tzdata tarball. 1347 Also, 'leapseconds.awk', so tzdata is self-contained. (Thanks to 1348 Matt Burgess and Ian Abbott.) The timestamps of these and other 1349 dependent files in tarballs are adjusted more consistently. 1350 1351 Changes affecting documentation and commentary 1352 1353 The README file is now part of the data tarball as well as the code. 1354 It now states that files are public domain unless otherwise specified. 1355 (Thanks to Andrew Main (Zefram) for asking for clarifications.) 1356 Its details about the 1989 release moved to a place of honor near 1357 the end of NEWS. 1358 1359 1360Release 2013f - 2013-09-24 23:37:36 -0700 1361 1362 Changes affecting near-future time stamps 1363 1364 Tocantins will very likely not observe DST starting this spring. 1365 (Thanks to Steffen Thorsen.) 1366 1367 Jordan will likely stay at UTC+3 indefinitely, and will not fall 1368 back this fall. 1369 1370 Palestine will fall back at 00:00, not 01:00. (Thanks to Steffen Thorsen.) 1371 1372 Changes affecting API 1373 1374 The types of the global variables 'timezone' and 'altzone' (if present) 1375 have been changed back to 'long'. This is required for 'timezone' 1376 by POSIX, and for 'altzone' by common practice, e.g., Solaris 11. 1377 These variables were originally 'long' in the tz code, but were 1378 mistakenly changed to 'time_t' in 1987; nobody reported the 1379 incompatibility until now. The difference matters on x32, where 1380 'long' is 32 bits and 'time_t' is 64. (Thanks to Elliott Hughes.) 1381 1382 Changes affecting the build procedure 1383 1384 Avoid long strings in leapseconds.awk to work around a mawk bug. 1385 (Thanks to Cyril Baurand.) 1386 1387 Changes affecting documentation and commentary 1388 1389 New file 'NEWS' that contains release notes like this one. 1390 1391 Paraguay's law does not specify DST transition time; 00:00 is customary. 1392 (Thanks to Waldemar Villamayor-Venialbo.) 1393 1394 Minor capitalization fixes. 1395 1396 Changes affecting version-control only 1397 1398 The experimental GitHub repository now contains annotated and 1399 signed tags for recent releases, e.g., '2013e' for Release 2013e. 1400 Releases are tagged starting with 2012e; earlier releases were 1401 done differently, and tags would either not have a simple name or 1402 not exactly match what was released. 1403 1404 'make set-timestamps' is now simpler and a bit more portable. 1405 1406 1407Release 2013e - 2013-09-19 23:50:04 -0700 1408 1409 Changes affecting near-future time stamps 1410 1411 This year Fiji will start DST on October 27, not October 20. 1412 (Thanks to David Wheeler for the heads-up.) For now, guess that 1413 Fiji will continue to spring forward the Sunday before the fourth 1414 Monday in October. 1415 1416 Changes affecting current and future time zone abbreviations 1417 1418 Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian 1419 time zone abbreviations since 1932. (Thanks to George Ziegler, 1420 Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and 1421 Benny Lin.) This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura, 1422 Asia/Makassar, and Asia/Pontianak. 1423 1424 Use ART (UTC-3, standard time), rather than WARST (also UTC-3, but 1425 daylight saving time) for San Luis, Argentina since 2009. 1426 1427 Changes affecting Godthåb time stamps after 2037 if version mismatch 1428 1429 Allow POSIX-like TZ strings where the transition time's hour can 1430 range from -167 through 167, instead of the POSIX-required 0 1431 through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the 1432 new Fiji rules. This is a more-compact way to represent 1433 far-future time stamps for America/Godthab, America/Santiago, 1434 Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem, 1435 Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by 1436 this change. (Derived from a suggestion by Arthur David Olson.) 1437 1438 Allow POSIX-like TZ strings where daylight saving time is in 1439 effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western 1440 Argentina Summer Time all year. This supports a more-compact way 1441 to represent the 2013d data for America/Argentina/San_Luis. 1442 Because of the change for San Luis noted above this change does not 1443 affect the current data. (Thanks to Andrew Main (Zefram) for 1444 suggestions that improved this change.) 1445 1446 Where these two TZ changes take effect, there is a minor extension 1447 to the tz file format in that it allows new values for the 1448 embedded TZ-format string, and the tz file format version number 1449 has therefore been increased from 2 to 3 as a precaution. 1450 Version-2-based client code should continue to work as before for 1451 all time stamps before 2038. Existing version-2-based client code 1452 (tzcode, GNU/Linux, Solaris) has been tested on version-3-format 1453 files, and typically works in practice even for time stamps after 1454 2037; the only known exception is America/Godthab. 1455 1456 Changes affecting time stamps before 1970 1457 1458 Pacific/Johnston is now a link to Pacific/Honolulu. This corrects 1459 some errors before 1947. 1460 1461 Some zones have been turned into links, when they differ from existing 1462 zones only in older data entries that were likely invented or that 1463 differ only in LMT or transitions from LMT. These changes affect 1464 only time stamps before 1943. The affected zones are: 1465 Africa/Juba, America/Anguilla, America/Aruba, America/Dominica, 1466 America/Grenada, America/Guadeloupe, America/Marigot, 1467 America/Montserrat, America/St_Barthelemy, America/St_Kitts, 1468 America/St_Lucia, America/St_Thomas, America/St_Vincent, 1469 America/Tortola, and Europe/Vaduz. (Thanks to Alois Treindl for 1470 confirming that the old Europe/Vaduz zone was wrong and the new 1471 link is better for WWII-era times.) 1472 1473 Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects 1474 America/Cayman, America/Jamaica and America/Grand_Turk time stamps 1475 from 1890 to 1912. 1476 1477 Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46. 1478 This affects Europe/Zurich time stamps from 1853 to 1894. (Thanks 1479 to Alois Treindl). 1480 1481 Change the date of the circa-1850 Zurich transition from 1849-09-12 1482 to 1853-07-16, overriding Shanks with data from Messerli about 1483 postal and telegraph time in Switzerland. 1484 1485 Changes affecting time zone abbreviations before 1970 1486 1487 For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932, 1488 as Jakarta was called Batavia back then. 1489 1490 Changes affecting API 1491 1492 The 'zic' command now outputs a dummy transition when far-future 1493 data can't be summarized using a TZ string, and uses a 402-year 1494 window rather than a 400-year window. For the current data, this 1495 affects only the Asia/Tehran file. It does not affect any of the 1496 time stamps that this file represents, so zdump outputs the same 1497 information as before. (Thanks to Andrew Main (Zefram).) 1498 1499 The 'date' command has a new '-r' option, which lets you specify 1500 the integer time to display, a la FreeBSD. 1501 1502 The 'tzselect' command has two new options '-c' and '-n', which lets you 1503 select a zone based on latitude and longitude. 1504 1505 The 'zic' command's '-v' option now warns about constructs that 1506 require the new version-3 binary file format. (Thanks to Arthur 1507 David Olson for the suggestion.) 1508 1509 Support for floating-point time_t has been removed. 1510 It was always dicey, and POSIX no longer requires it. 1511 (Thanks to Eric Blake for suggesting to the POSIX committee to 1512 remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy 1513 Heninger, Arthur David Olson, and Alois Treindl, for reporting 1514 bugs and elucidating some of the corners of the old floating-point 1515 implementation.) 1516 1517 The signatures of 'offtime', 'timeoff', and 'gtime' have been 1518 changed back to the old practice of using 'long' to represent UT 1519 offsets. This had been inadvertently and mistakenly changed to 1520 'int_fast32_t'. (Thanks to Christos Zoulas.) 1521 1522 The code avoids undefined behavior on integer overflow in some 1523 more places, including gmtime, localtime, mktime and zdump. 1524 1525 Changes affecting the zdump utility 1526 1527 zdump now outputs "UT" when referring to Universal Time, not "UTC". 1528 "UTC" does not make sense for time stamps that predate the introduction 1529 of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen 1530 for clarifying UT vs UTC.) 1531 1532 Data changes affecting behavior of tzselect and similar programs 1533 1534 Country code BQ is now called the more-common name "Caribbean Netherlands" 1535 rather than the more-official "Bonaire, St Eustatius & Saba". 1536 1537 Remove from zone.tab the names America/Montreal, America/Shiprock, 1538 and Antarctica/South_Pole, as they are equivalent to existing 1539 same-country-code zones for post-1970 time stamps. The data entries for 1540 these names are unchanged, so the names continue to work as before. 1541 1542 Changes affecting code internals 1543 1544 zic -c now runs way faster on 64-bit hosts when given large numbers. 1545 1546 zic now uses vfprintf to avoid allocating and freeing some memory. 1547 1548 tzselect now computes the list of continents from the data, 1549 rather than have it hard-coded. 1550 1551 Minor changes pacify GCC 4.7.3 and GCC 4.8.1. 1552 1553 Changes affecting the build procedure 1554 1555 The 'leapseconds' file is now generated automatically from a 1556 new file 'leap-seconds.list', which is a copy of 1557 <ftp://time.nist.gov/pub/leap-seconds.list>. 1558 A new source file 'leapseconds.awk' implements this. 1559 The goal is simplification of the future maintenance of 'leapseconds'. 1560 1561 When building the 'posix' or 'right' subdirectories, if the 1562 subdirectory would be a copy of the default subdirectory, it is 1563 now made a symbolic link if that is supported. This saves about 1564 2 MB of file system space. 1565 1566 The links America/Shiprock and Antarctica/South_Pole have been 1567 moved to the 'backward' file. This affects only nondefault builds 1568 that omit 'backward'. 1569 1570 Changes affecting version-control only 1571 1572 .gitignore now ignores 'date'. 1573 1574 Changes affecting documentation and commentary 1575 1576 Changes to the 'tzfile' man page 1577 1578 It now mentions that the binary file format may be extended in 1579 future versions by appending data. 1580 1581 It now refers to the 'zdump' and 'zic' man pages. 1582 1583 Changes to the 'zic' man page 1584 1585 It lists conditions that elicit a warning with '-v'. 1586 1587 It says that the behavior is unspecified when duplicate names 1588 are given, or if the source of one link is the target of another. 1589 1590 Its examples are updated to match the latest data. 1591 1592 The definition of white space has been clarified slightly. 1593 (Thanks to Michael Deckers.) 1594 1595 Changes to the 'Theory' file 1596 1597 There is a new section about the accuracy of the tz database, 1598 describing the many ways that errors can creep in, and 1599 explaining why so many of the pre-1970 time stamps are wrong or 1600 misleading (thanks to Steve Allen, Lester Caine, and Garrett 1601 Wollman for discussions that contributed to this). 1602 1603 The 'Theory' file describes LMT better (this follows a 1604 suggestion by Guy Harris). 1605 1606 It refers to the 2013 edition of POSIX rather than the 2004 edition. 1607 1608 It's mentioned that excluding 'backward' should not affect the 1609 other data, and it suggests at least one zone.tab name per 1610 inhabited country (thanks to Stephen Colebourne). 1611 1612 Some longstanding restrictions on names are documented, e.g., 1613 'America/New_York' precludes 'America/New_York/Bronx'. 1614 1615 It gives more reasons for the 1970 cutoff. 1616 1617 It now mentions which time_t variants are supported, such as 1618 signed integer time_t. (Thanks to Paul Goyette for reporting 1619 typos in an experimental version of this change.) 1620 1621 (Thanks to Philip Newton for correcting typos in these changes.) 1622 1623 Documentation and commentary is more careful to distinguish UT in 1624 general from UTC in particular. (Thanks to Steve Allen.) 1625 1626 Add a better source for the Zurich 1894 transition. 1627 (Thanks to Pierre-Yves Berger.) 1628 1629 Update shapefile citations in tz-link.htm. (Thanks to Guy Harris.) 1630 1631 1632Release 2013d - 2013-07-05 07:38:01 -0700 1633 1634 Changes affecting future time stamps: 1635 1636 Morocco's midsummer transitions this year are July 7 and August 10, 1637 not July 9 and August 8. (Thanks to Andrew Paprocki.) 1638 1639 Israel now falls back on the last Sunday of October. 1640 (Thanks to Ephraim Silverberg.) 1641 1642 Changes affecting past time stamps: 1643 1644 Specify Jerusalem's location more precisely; this changes the pre-1880 1645 times by 2 s. 1646 1647 Changing affecting metadata only: 1648 1649 Fix typos in the entries for country codes BQ and SX. 1650 1651 Changes affecting code: 1652 1653 Rework the code to fix a bug with handling Australia/Macquarie on 1654 32-bit hosts (thanks to Arthur David Olson). 1655 1656 Port to platforms like NetBSD, where time_t can be wider than long. 1657 1658 Add support for testing time_t types other than the system's. 1659 Run 'make check_time_t_alternatives' to try this out. 1660 Currently, the tests fail for unsigned time_t; 1661 this should get fixed at some point. 1662 1663 Changes affecting documentation and commentary: 1664 1665 Deemphasize the significance of national borders. 1666 1667 Update the zdump man page. 1668 1669 Remove obsolete NOID comment (thanks to Denis Excoffier). 1670 1671 Update several URLs and comments in the web pages. 1672 1673 Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler). 1674 1675 Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka). 1676 1677 1678Release 2013c - 2013-04-19 16:17:40 -0700 1679 1680 Changes affecting current and future time stamps: 1681 1682 Palestine observed DST starting March 29, 2013. (Thanks to 1683 Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST, 1684 with the predicted rules being the last Thursday in March at 24:00 1685 to the first Friday on or after September 21 at 01:00. 1686 1687 Assume that the recent change to Paraguay's DST rules is permanent, 1688 by moving the end of DST to the 4th Sunday in March every year. 1689 (Thanks to Carlos Raúl Perasso.) 1690 1691 Changes affecting past time stamps: 1692 1693 Fix some historical data for Palestine to agree with that of 1694 timeanddate.com, as follows: 1695 1696 The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not 1697 00:00 Apr 1. 1698 1699 The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not 1700 02:00. 1701 1702 The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27. 1703 1704 The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2. 1705 1706 The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01. 1707 1708 The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00. 1709 1710 Fix times of habitation for Macquarie to agree with the Tasmania 1711 Parks & Wildlife Service history, which indicates that permanent 1712 habitation was 1899-1919 and 1948 on. 1713 1714 Changing affecting metadata only: 1715 1716 Macquarie Island is politically part of Australia, not Antarctica. 1717 (Thanks to Tobias Conradi.) 1718 1719 Sort Macquarie more-consistently with other parts of Australia. 1720 (Thanks to Tim Parenti.) 1721 1722 1723Release 2013b - 2013-03-10 22:33:40 -0700 1724 1725 Changes affecting current and future time stamps: 1726 1727 Haiti uses US daylight-saving rules this year, and presumably future years. 1728 This changes time stamps starting today. (Thanks to Steffen Thorsen.) 1729 1730 Paraguay will end DST on March 24 this year. 1731 (Thanks to Steffen Thorsen.) For now, assume it's just this year. 1732 1733 Morocco does not observe DST during Ramadan; 1734 try to predict Ramadan in Morocco as best we can. 1735 (Thanks to Erik Homoet for the heads-up.) 1736 1737 Changes affecting commentary: 1738 1739 Update URLs in tz-link page. Add URLs for webOS, BB10, iOS. 1740 Update URL for Solaris. Mention Internet RFC 6557. 1741 Update Internet RFCs 2445->5545, 2822->5322. 1742 Switch from FTP to HTTP for Internet RFCs. 1743 1744 1745Release 2013a - 2013-02-27 09:20:35 -0800 1746 1747 Change affecting binary data format: 1748 1749 The zone offset at the end of version-2-format zone files is now 1750 allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.) 1751 1752 Changes affecting current and future time stamps: 1753 1754 Chile's 2013 rules, and we guess rules for 2014 and later, will be 1755 the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC. 1756 (Thanks to Steffen Thorsen and Robert Elz.) 1757 1758 New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen. 1759 (Thanks to Tobias Conradi and Arthur David Olson.) 1760 1761 Many changes affect historical time stamps before 1940. 1762 These were deduced from: Milne J. Civil time. Geogr J. 1899 1763 Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>. 1764 1765 Changes affecting the code: 1766 1767 Fix zic bug that mishandled Egypt's 2010 changes (this also affected 1768 the data). (Thanks to Arthur David Olson.) 1769 1770 Fix localtime bug when time_t is unsigned and data files were generated 1771 by a signed time_t system. (Thanks to Doug Bailey for reporting and 1772 to Arthur David Olson for fixing.) 1773 1774 Allow the email address for bug reports to be set by the packager. 1775 The default is tz@iana.org, as before. (Thanks to Joseph S. Myers.) 1776 1777 Update HTML checking to be compatible with Ubuntu 12.10. 1778 1779 Check that files are a safe subset of ASCII. At some point we may 1780 relax this requirement to a safe subset of UTF-8. Without the 1781 check, some non-UTF-8 encodings were leaking into the distribution. 1782 1783 Commentary changes: 1784 1785 Restore a comment about copyright notices that was inadvertently deleted. 1786 (Thanks to Arthur David Olson.) 1787 1788 Improve the commentary about which districts observe what times 1789 in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson). 1790 1791 Add web page links to tz.js. 1792 1793 Add "Run by the Monkeys" to tz-art. (Thanks to Arthur David Olson.) 1794 1795 1796Release 2012j - 2012-11-12 18:34:49 -0800 1797 1798 Libya moved to CET this weekend, but with DST planned next year. 1799 (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.) 1800 1801 Signatures now have the extension .asc, not .sign, as that's more 1802 standard. (Thanks to Phil Pennock.) 1803 1804 The output of 'zdump --version', and of 'zic --version', now 1805 uses a format that is more typical for --version. 1806 (Thanks to Joseph S. Myers.) 1807 1808 The output of 'tzselect --help', 'zdump --help', and 'zic --help' 1809 now uses tz@iana.org rather than the old elsie address. 1810 1811 zic -v now complains about abbreviations that are less than 3 1812 or more than 6 characters, as per Posix. Formerly, it checked 1813 for abbreviations that were more than 3. 1814 1815 'make public' no longer puts its temporary directory under /tmp, 1816 and uses the just-built zic rather than the system zic. 1817 1818 Various fixes to documentation and commentary. 1819 1820 1821Release 2012i - 2012-11-03 12:57:09 -0700 1822 1823 Cuba switches from DST tomorrow at 01:00. (Thanks to Steffen Thorsen.) 1824 1825 Linker flags can now be specified via LDFLAGS. 1826 AWK now defaults to 'awk', not 'nawk'. 1827 The shell in tzselect now defaults to /bin/bash, but this can 1828 be overridden by specifying KSHELL. 1829 The main web page now mentions the unofficial GitHub repository. 1830 (Thanks to Mike Frysinger.) 1831 1832 Tarball signatures can now be built by running 'make signatures'. 1833 There are also new makefile rules 'tarballs', 'check_public', and 1834 separate makefile rules for each tarball and signature file. 1835 A few makefile rules are now more portable to strict POSIX. 1836 1837 The main web page now lists the canonical IANA URL. 1838 1839 1840Release 2012h - 2012-10-26 22:49:10 -0700 1841 1842 Bahia no longer has DST. (Thanks to Kelley Cook.) 1843 1844 Tocantins has DST. (Thanks to Rodrigo Severo.) 1845 1846 Israel has new DST rules next year. (Thanks to Ephraim Silverberg.) 1847 1848 Jordan stays on DST this winter. (Thanks to Steffen Thorsen.) 1849 1850 Web page updates. 1851 1852 More C modernization, except that at Arthur David Olson's suggestion 1853 the instances of 'register' were kept. 1854 1855 1856Release 2012g - 2012-10-17 20:59:45 -0700 1857 1858 Samoa fall 2012 and later. (Thanks to Nicholas Pereira and Robert Elz.) 1859 1860 Palestine fall 2012. (Thanks to Steffen Thorsen.) 1861 1862 Assume C89. 1863 1864 To attack the version-number problem, this release ships the file 1865 'Makefile' (which contains the release number) in both the tzcode and 1866 the tzdata tarballs. The two Makefiles are identical, and should be 1867 identical in any matching pair of tarballs, so it shouldn't matter 1868 which order you extract the tarballs. Perhaps we can come up with a 1869 better version-number scheme at some point; this scheme does have the 1870 virtue of not adding more files. 1871 1872 1873Release 2012f - 2012-09-12 23:17:03 -0700 1874 1875 * australasia (Pacific/Fiji): Fiji DST is October 21 through January 1876 20 this year. (Thanks to Steffen Thorsen.) 1877 1878 1879Release 2012e - 2012-08-02 20:44:55 -0700 1880 1881 * australasia (Pacific/Fakaofo): Tokelau is UTC+13, not UTC+14. 1882 (Thanks to Steffen Thorsen.) 1883 1884 * Use a single version number for both code and data. 1885 1886 * .gitignore: New file. 1887 1888 * Remove trailing white space. 1889 1890 1891Release code2012c-data2012d - 2012-07-19 16:35:33 -0700 1892 1893 Changes for Morocco's time stamps, which take effect in a couple of 1894 hours, along with infrastructure changes to accommodate how the tz 1895 code and data are released on IANA. 1896 1897 1898Release data2012c - 2012-03-27 12:17:25 -0400 1899 1900 africa 1901 Summer time changes for Morocco (to start late April 2012) 1902 1903 asia 1904 Changes for 2012 for Gaza & the West Bank (Hebron) and Syria 1905 1906 northamerica 1907 Haiti following US/Canada rules for 2012 (and we're assuming, 1908 for now anyway, for the future). 1909 1910 1911Release 2012b - 2012-03-02 12:29:15 +0700 1912 1913 There is just one change to tzcode2012b (compared with 2012a): 1914 the Makefile that was accidentally included with 2012a has been 1915 replaced with the version that should have been there, which is 1916 identical with the previous version (from tzcode2011i). 1917 1918 There are just two changes in tzdata2012b compared with 2012a. 1919 1920 Most significantly, summer time in Cuba has been delayed 3 weeks 1921 (now starts April 1 rather than March 11). Since Mar 11 (the old start 1922 date, as listed in 2012a) is just a little over a week away, this 1923 change is urgent. 1924 1925 Less importantly, an excess tab in one of the changes in zone.tab 1926 in 2012a has been removed. 1927 1928 1929Release 2012a - 2012-03-01 18:28:10 +0700 1930 1931 The changes in tzcode2012a (compared to the previous version, 2011i) 1932 are entirely to the README and tz-art.htm and tz-link.htm files, if 1933 none of those concern you, you can ignore the code update. The changes 1934 reflect the changed addresses for the mailing list and the code and 1935 data distribution points & methods (and a link to DateTime::TimeZone::Tzfile 1936 has been added to tz-link.htm). 1937 1938 In tzdata2012a (compared to the previous release, which was 2011n) 1939 the major changes are: 1940 Chile 2011/2012 and 2012/2013 summer time date adjustments. 1941 Falkland Islands onto permanent summer time (we're assuming for the 1942 foreseeable future, though 2012 is all we're fairly certain of.) 1943 Armenia has abolished Summer Time. 1944 Tokelau jumped the International Date Line back last December 1945 (just the same as their near neighbour, Samoa). 1946 America/Creston is a new zone for a small area of British Columbia 1947 There will be a leapsecond 2012-06-30 23:59:60 UTC. 1948 1949 Other minor changes are: 1950 Corrections to 1918 Canadian summer time end dates. 1951 Updated URL for UK time zone history (in comments) 1952 A few typos in Le Corre's list of free French place names (comments) 1953 1954 1955Release data2011n - 2011-10-30 14:57:54 +0700 1956 1957 There are three changes of note - most urgently, Cuba (America/Havana) 1958 has extended summer time by two weeks, now to end on Nov 13, rather than 1959 the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic 1960 (Europe/Tiraspol) decided not to split from the rest of Moldova after 1961 all, and consequently that zone has been removed (again) and reinstated 1962 in the "backward" file as a link to Europe/Chisinau. And third, the 1963 end date for Fiji's summer time this summer was moved forward from the 1964 earlier planned Feb 26, to Jan 22. 1965 1966 Apart from that, Moldova (MD) returns to a single entry in zone.tab 1967 (and the incorrect syntax that was in the 2011m version of that file 1968 is so fixed - it would have been fixed in a different way had this 1969 change not happened - that's the "missing" sccs version id). 1970 1971 1972Release data2011m - 2011-10-24 21:42:16 +0700 1973 1974 In particular, the typos in comments in the data (2011-11-17 should have 1975 been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that 1976 Tim Parenti noted) have been fixed, and the change for Ukraine has been 1977 made in all 4 Ukrainian zones, rather than just Kiev (again, thanks to 1978 Tim Parenti, and also Denys Gavrysh) 1979 1980 In addition, I added Europe/Tiraspol to zone.tab. 1981 1982 This time, all the files have new version numbers... (including the files 1983 otherwise unchanged in 2011m that were changed in 2011l but didn't get new 1984 version numbers there...) 1985 1986 1987Release data2011l - 2011-10-10 11:15:43 +0700 1988 1989 There are just 2 changes that cause different generated tzdata files from 1990 zic, to Asia/Hebron and Pacific/Fiji - the possible change for Bahia, Brazil 1991 is included, but commented out. Compared with the diff I sent out last week, 1992 this version also includes attributions for the sources for the changes 1993 (in much the same format as ado used, but the html tags have not been 1994 checked, verified, or used in any way at all, so if there are errors there, 1995 please let me know.) 1996 1997 1998Release data2011k - 2011-09-20 17:54:03 -0400 1999 2000 [not summarized] 2001 2002 2003Release data2011j - 2011-09-12 09:22:49 -0400 2004 2005 (contemporary changes for Samoa; past changes for Kenya, Uganda, and 2006 Tanzania); there are also two spelling corrections to comments in 2007 the australasia file (with thanks to Christos Zoulas). 2008 2009 2010Release 2011i - 2011-08-29 05:56:32 -0400 2011 2012 [not summarized] 2013 2014 2015Release data2011h - 2011-06-15 18:41:48 -0400 2016 2017 Russia and Curaçao changes 2018 2019 2020Release 2011g - 2011-04-25 09:07:22 -0400 2021 2022 update the rules for Egypt to reflect its abandonment of DST this year 2023 2024 2025Release 2011f - 2011-04-06 17:14:53 -0400 2026 2027 [not summarized] 2028 2029 2030Release 2011e - 2011-03-31 16:04:38 -0400 2031 2032 Morocco, Chile, and tz-link changes 2033 2034 2035Release 2011d - 2011-03-14 09:18:01 -0400 2036 2037 changes that impact present-day time stamps in Cuba, Samoa, and Turkey 2038 2039 2040Release 2011c - 2011-03-07 09:30:09 -0500 2041 2042 These do affect current time stamps in Chile and Annette Island, Canada. 2043 2044 2045Release 2011b - 2011-02-07 08:44:50 -0500 2046 2047 [not summarized] 2048 2049 2050Release 2011a - 2011-01-24 10:30:16 -0500 2051 2052 [not summarized] 2053 2054 2055Release data2010o - 2010-11-01 09:18:23 -0400 2056 2057 change to the end of DST in Fiji in 2011 2058 2059 2060Release 2010n - 2010-10-25 08:19:17 -0400 2061 2062 [not summarized] 2063 2064 2065Release 2010m - 2010-09-27 09:24:48 -0400 2066 2067 Hong Kong, Vostok, and zic.c changes 2068 2069 2070Release 2010l - 2010-08-16 06:57:25 -0400 2071 2072 [not summarized] 2073 2074 2075Release 2010k - 2010-07-26 10:42:27 -0400 2076 2077 [not summarized] 2078 2079 2080Release 2010j - 2010-05-10 09:07:48 -0400 2081 2082 changes for Bahía de Banderas and for version naming 2083 2084 2085Release data2010i - 2010-04-16 18:50:45 -0400 2086 2087 the end of DST in Morocco on 2010-08-08 2088 2089 2090Release data2010h - 2010-04-05 09:58:56 -0400 2091 2092 [not summarized] 2093 2094 2095Release data2010g - 2010-03-24 11:14:53 -0400 2096 2097 [not summarized] 2098 2099 2100Release 2010f - 2010-03-22 09:45:46 -0400 2101 2102 [not summarized] 2103 2104 2105Release data2010e - 2010-03-08 14:24:27 -0500 2106 2107 corrects the Dhaka bug found by Danvin Ruangchan 2108 2109 2110Release data2010d - 2010-03-06 07:26:01 -0500 2111 2112 [not summarized] 2113 2114 2115Release 2010c - 2010-03-01 09:20:58 -0500 2116 2117 changes including KRE's suggestion for earlier initialization of 2118 "goahead" and "goback" structure elements 2119 2120 2121Release code2010a - 2010-02-16 10:40:04 -0500 2122 2123 [not summarized] 2124 2125 2126Release data2010b - 2010-01-20 12:37:01 -0500 2127 2128 Mexico changes 2129 2130 2131Release data2010a - 2010-01-18 08:30:04 -0500 2132 2133 changes to Dhaka 2134 2135 2136Release data2009u - 2009-12-26 08:32:28 -0500 2137 2138 changes to DST in Bangladesh 2139 2140 2141Release 2009t - 2009-12-21 13:24:27 -0500 2142 2143 [not summarized] 2144 2145 2146Release data2009s - 2009-11-14 10:26:32 -0500 2147 2148 (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change 2149 2150 2151Release 2009r - 2009-11-09 10:10:31 -0500 2152 2153 "antarctica" and "tz-link.htm" changes 2154 2155 2156Release 2009q - 2009-11-02 09:12:40 -0500 2157 2158 with two corrections as reported by Eric Muller and Philip Newton 2159 2160 2161Release data2009p - 2009-10-23 15:05:27 -0400 2162 2163 Argentina (including San Luis) changes (with the correction from 2164 Mariano Absatz) 2165 2166 2167Release data2009o - 2009-10-14 16:49:38 -0400 2168 2169 Samoa (commentary only), Pakistan, and Bangladesh changes 2170 2171 2172Release data2009n - 2009-09-22 15:13:38 -0400 2173 2174 added commentary for Argentina and a change to the end of DST in 2175 2009 in Pakistan 2176 2177 2178Release data2009m - 2009-09-03 10:23:43 -0400 2179 2180 Samoa and Palestine changes 2181 2182 2183Release data2009l - 2009-08-14 09:13:07 -0400 2184 2185 Samoa (comments only) and Egypt 2186 2187 2188Release 2009k - 2009-07-20 09:46:08 -0400 2189 2190 [not summarized] 2191 2192 2193Release data2009j - 2009-06-15 06:43:59 -0400 2194 2195 Bangladesh change (with a short turnaround since the DST change is 2196 impending) 2197 2198 2199Release 2009i - 2009-06-08 09:21:22 -0400 2200 2201 updating for DST in Bangladesh this year 2202 2203 2204Release 2009h - 2009-05-26 09:19:14 -0400 2205 2206 [not summarized] 2207 2208 2209Release data2009g - 2009-04-20 16:34:07 -0400 2210 2211 Cairo 2212 2213 2214Release data2009f - 2009-04-10 11:00:52 -0400 2215 2216 correct DST in Pakistan 2217 2218 2219Release 2009e - 2009-04-06 09:08:11 -0400 2220 2221 [not summarized] 2222 2223 2224Release 2009d - 2009-03-23 09:38:12 -0400 2225 2226 Morocco, Tunisia, Argentina, and American Astronomical Society changes 2227 2228 2229Release data2009c - 2009-03-16 09:47:51 -0400 2230 2231 change to the start of Cuban DST 2232 2233 2234Release 2009b - 2009-02-09 11:15:22 -0500 2235 2236 [not summarized] 2237 2238 2239Release 2009a - 2009-01-21 10:09:39 -0500 2240 2241 [not summarized] 2242 2243 2244Release data2008i - 2008-10-21 12:10:25 -0400 2245 2246 southamerica and zone.tab files, with Argentina DST rule changes and 2247 United States zone reordering and recommenting 2248 2249 2250Release 2008h - 2008-10-13 07:33:56 -0400 2251 2252 [not summarized] 2253 2254 2255Release 2008g - 2008-10-06 09:03:18 -0400 2256 2257 Fix a broken HTML anchor and update Brazil's DST transitions; 2258 there's also a slight reordering of information in tz-art.htm. 2259 2260 2261Release data2008f - 2008-09-09 22:33:26 -0400 2262 2263 [not summarized] 2264 2265 2266Release 2008e - 2008-07-28 14:11:17 -0400 2267 2268 changes by Arthur David Olson and Jesper Nørgaard Welen 2269 2270 2271Release data2008d - 2008-07-07 09:51:38 -0400 2272 2273 changes by Arthur David Olson, Paul Eggert, and Rodrigo Severo 2274 2275 2276Release data2008c - 2008-05-19 17:48:03 -0400 2277 2278 Pakistan, Morocco, and Mongolia 2279 2280 2281Release data2008b - 2008-03-24 08:30:59 -0400 2282 2283 including renaming Asia/Calcutta to Asia/Kolkata, with a backward 2284 link provided 2285 2286 2287Release 2008a - 2008-03-08 05:42:16 -0500 2288 2289 [not summarized] 2290 2291 2292Release 2007k - 2007-12-31 10:25:22 -0500 2293 2294 most importantly, changes to the "southamerica" file based on 2295 Argentina's readoption of daylight saving time 2296 2297 2298Release 2007j - 2007-12-03 09:51:01 -0500 2299 2300 1. eliminate the "P" (parameter) macro; 2301 2302 2. the "noncontroversial" changes circulated on the time zone 2303 mailing list (less the changes to "logwtmp.c"); 2304 2305 3. eliminate "too many transition" errors when "min" is used in time 2306 zone rules; 2307 2308 4. changes by Paul Eggert (including updated information for Venezuela). 2309 2310 2311Release data2007i - 2007-10-30 10:28:11 -0400 2312 2313 changes for Cuba and Syria 2314 2315 2316Release 2007h - 2007-10-01 10:05:51 -0400 2317 2318 changes by Paul Eggert, as well as an updated link to the ICU 2319 project in tz-link.htm 2320 2321 2322Release 2007g - 2007-08-20 10:47:59 -0400 2323 2324 changes by Paul Eggert 2325 2326 The "leapseconds" file has been updated to incorporate the most 2327 recent International Earth Rotation and Reference Systems Service 2328 (IERS) bulletin. 2329 2330 There's an addition to tz-art.htm regarding the television show "Medium". 2331 2332 2333Release 2007f - 2007-05-07 10:46:46 -0400 2334 2335 changes by Paul Eggert (including Haiti, Turks and Caicos, and New 2336 Zealand) 2337 2338 changes to zic.c to allow hour values greater than 24 (along with 2339 Paul's improved time value overflow checking) 2340 2341 2342Release 2007e - 2007-04-02 10:11:52 -0400 2343 2344 Syria and Honduras changes by Paul Eggert 2345 2346 zic.c variable renaming changes by Arthur David Olson 2347 2348 2349Release 2007d - 2007-03-20 08:48:30 -0400 2350 2351 changes by Paul Eggert 2352 2353 the elimination of white space at the ends of lines 2354 2355 2356Release 2007c - 2007-02-26 09:09:37 -0500 2357 2358 changes by Paul Eggert 2359 2360 2361Release 2007b - 2007-02-12 09:34:20 -0500 2362 2363 Paul Eggert's proposed change to the quotation handling logic in zic.c. 2364 2365 changes to the commentary in "leapseconds" reflecting the IERS 2366 announcement that there is to be no positive leap second at the end 2367 of June 2007. 2368 2369 2370Release 2007a - 2007-01-08 12:28:29 -0500 2371 2372 changes by Paul Eggert 2373 2374 Derick Rethan's Asmara change 2375 2376 Oscar van Vlijmen's Easter Island local mean time change 2377 2378 symbolic link changes 2379 2380 2381Release 2006p - 2006-11-27 08:54:27 -0500 2382 2383 changes by Paul Eggert 2384 2385 2386Release 2006o - 2006-11-06 09:18:07 -0500 2387 2388 changes by Paul Eggert 2389 2390 2391Release 2006n - 2006-10-10 11:32:06 -0400 2392 2393 changes by Paul Eggert 2394 2395 2396Release 2006m - 2006-10-02 15:32:35 -0400 2397 2398 changes for Uruguay, Palestine, and Egypt by Paul Eggert 2399 2400 (minimalist) changes to zic.8 to clarify "until" information 2401 2402 2403Release data2006l - 2006-09-18 12:58:11 -0400 2404 2405 Paul's best-effort work on this coming weekend's Egypt time change 2406 2407 2408Release 2006k - 2006-08-28 12:19:09 -0400 2409 2410 changes by Paul Eggert 2411 2412 2413Release 2006j - 2006-08-21 09:56:32 -0400 2414 2415 changes by Paul Eggert 2416 2417 2418Release code2006i - 2006-08-07 12:30:55 -0400 2419 2420 localtime.c fixes 2421 2422 Ken Pizzini's conversion script 2423 2424 2425Release code2006h - 2006-07-24 09:19:37 -0400 2426 2427 adds public domain notices to four files 2428 2429 includes a fix for transition times being off by a second 2430 2431 adds a new recording to the "arts" file (information courtesy Colin Bowern) 2432 2433 2434Release 2006g - 2006-05-08 17:18:09 -0400 2435 2436 northamerica changes by Paul Eggert 2437 2438 2439Release 2006f - 2006-05-01 11:46:00 -0400 2440 2441 a missing version number problem is fixed (with thanks to Bradley 2442 White for catching the problem) 2443 2444 2445Release 2006d - 2006-04-17 14:33:43 -0400 2446 2447 changes by Paul Eggert 2448 2449 added new items to tz-arts.htm that were found by Paul 2450 2451 2452Release 2006c - 2006-04-03 10:09:32 -0400 2453 2454 two sets of data changes by Paul Eggert 2455 2456 a fencepost error fix in zic.c 2457 2458 changes to zic.c and the "europe" file to minimize differences 2459 between output produced by the old 32-bit zic and the new 64-bit 2460 version 2461 2462 2463Release 2006b - 2006-02-20 10:08:18 -0500 2464 [tz32code2006b + tz64code2006b + tzdata2006b] 2465 2466 64-bit code 2467 2468 All SCCS IDs were bumped to "8.1" for this release. 2469 2470 2471Release 2006a - 2006-01-30 08:59:31 -0500 2472 2473 changes by Paul Eggert (in particular, Indiana time zone moves) 2474 2475 an addition to the zic manual page to describe how special-case 2476 transitions are handled 2477 2478 2479Release 2005r - 2005-12-27 09:27:13 -0500 2480 2481 Canadian changes by Paul Eggert 2482 2483 They also add "<pre>" directives to time zone data files and reflect 2484 changes to warning message logic in "zdump.c" (but with calls to 2485 "gettext" kept unbundled at the suggestion of Ken Pizzini). 2486 2487 2488Release 2005q - 2005-12-13 09:17:09 -0500 2489 2490 Nothing earth-shaking here: 2491 1. Electronic mail addresses have been removed. 2492 2. Casts of the return value of exit have been removed. 2493 3. Casts of the argument of is.* macros have been added. 2494 4. Indentation in one section of zic.c has been fixed. 2495 5. References to dead URLs in the data files have been dealt with. 2496 2497 2498Release 2005p - 2005-12-05 10:30:53 -0500 2499 2500 "systemv", "tz-link.htm", and "zdump.c" changes 2501 (less the casts of arguments to the is* macros) 2502 2503 2504Release 2005o - 2005-11-28 10:55:26 -0500 2505 2506 Georgia, Cuba, Nicaragua, and Jordan changes by Paul Eggert 2507 2508 zdump.c lint fixes by Arthur David Olson 2509 2510 2511Release 2005n - 2005-10-03 09:44:09 -0400 2512 2513 changes by Paul Eggert (both the Uruguay changes and the Kyrgyzstan 2514 et al. changes) 2515 2516 2517Release 2005m - 2005-08-29 12:15:40 -0400 2518 2519 changes by Paul Eggert (with a small tweak to the tz-art change) 2520 2521 a declaration of an unused variable has been removed from zdump.c 2522 2523 2524Release 2005l - 2005-08-22 12:06:39 -0400 2525 2526 changes by Paul Eggert 2527 2528 overflow/underflow checks by Arthur David Olson, minus changes to 2529 the "Theory" file about the pending addition of 64-bit data (I grow 2530 less confident of the changes being accepted with each passing day, 2531 and the changes no longer increase the data files nine-fold--there's 2532 less than a doubling in size by my local Sun's reckoning) 2533 2534 2535Release 2005k - 2005-07-14 14:14:24 -0400 2536 2537 The "leapseconds" file has been edited to reflect the recently 2538 announced leap second at the end of 2005. 2539 2540 I've also deleted electronic mail addresses from the files as an 2541 anti-spam measure. 2542 2543 2544Release 2005j - 2005-06-13 14:34:13 -0400 2545 2546 These reflect changes to limit the length of time zone abbreviations 2547 and the characters used in those abbreviations. 2548 2549 There are also changes to handle POSIX-style "quoted" time zone 2550 environment variables. 2551 2552 The changes were circulated on the time zone mailing list; the only 2553 change since then was the removal of a couple of minimum-length of 2554 abbreviation checks. 2555 2556 2557Release data2005i - 2005-04-21 15:04:16 -0400 2558 2559 changes (most importantly to Nicaragua and Haiti) by Paul Eggert 2560 2561 2562Release 2005h - 2005-04-04 11:24:47 -0400 2563 2564 changes by Paul Eggert 2565 2566 minor changes to Makefile and zdump.c to produce more useful output 2567 when doing a "make typecheck" 2568 2569 2570Release 2005g - 2005-03-14 10:11:21 -0500 2571 2572 changes by Paul Eggert (a change to current DST rules in Uruguay and 2573 an update to a link to time zone software) 2574 2575 2576Release 2005f - 2005-03-01 08:45:32 -0500 2577 2578 data and documentation changes by Paul Eggert 2579 2580 2581Release 2005e - 2005-02-10 15:59:44 -0500 2582 2583 [not summarized] 2584 2585 2586Release code2005d - 2005-01-31 09:21:47 -0500 2587 2588 make zic complain about links to links if the -v flag is used 2589 2590 have "make public" do more code checking 2591 2592 add an include to "localtime.c" for the benefit of gcc systems 2593 2594 2595Release 2005c - 2005-01-17 18:36:29 -0500 2596 2597 get better results when mktime runs on a system where time_t is double 2598 2599 changes to the data files (most importantly to Paraguay) 2600 2601 2602Release 2005b - 2005-01-10 09:19:54 -0500 2603 2604 Get localtime and gmtime working on systems with exotic time_t types. 2605 2606 Update the leap second commentary in the "leapseconds" file. 2607 2608 2609Release 2005a - 2005-01-01 13:13:44 -0500 2610 2611 [not summarized] 2612 2613 2614Release code2004i - 2004-12-14 13:42:58 -0500 2615 2616 Deal with systems where time_t is unsigned. 2617 2618 2619Release code2004h - 2004-12-07 11:40:18 -0500 2620 2621 64-bit-time_t changes 2622 2623 2624Release 2004g - 2004-11-02 09:06:01 -0500 2625 2626 update to Cuba (taking effect this weekend) 2627 2628 other changes by Paul Eggert 2629 2630 correction of the spelling of Oslo 2631 2632 changed versions of difftime.c and private.h 2633 2634 2635Release code2004f - 2004-10-21 10:25:22 -0400 2636 2637 Cope with wide-ranging tm_year values. 2638 2639 2640Release 2004e - 2004-10-11 14:47:21 -0400 2641 2642 Brazil/Argentina/Israel changes by Paul Eggert 2643 2644 changes to tz-link.htm by Paul 2645 2646 one small fix to Makefile 2647 2648 2649Release 2004d - 2004-09-22 08:27:29 -0400 2650 2651 Avoid overflow problems when TM_YEAR_BASE is added to an integer. 2652 2653 2654Release 2004c - 2004-08-11 12:06:26 -0400 2655 2656 asctime-related changes 2657 2658 (variants of) some of the documentation changes suggested by Paul Eggert 2659 2660 2661Release 2004b - 2004-07-19 14:33:35 -0400 2662 2663 data changes by Paul Eggert - most importantly, updates for Argentina 2664 2665 2666Release 2004a - 2004-05-27 12:00:47 -0400 2667 2668 changes by Paul Eggert 2669 2670 Handle DST transitions that occur at the end of a month in some 2671 years but at the start of the following month in other years. 2672 2673 Add a copy of the correspondence that's the basis for claims about 2674 DST in the Navajo Nation. 2675 2676 2677Release 2003e - 2003-12-15 09:36:47 -0500 2678 2679 changes by Arthur David Olson (primarily code changes) 2680 2681 changes by Paul Eggert (primarily data changes) 2682 2683 minor changes to "Makefile" and "northamerica" (in the latter case, 2684 optimization of the "Toronto" rules) 2685 2686 2687Release 2003d - 2003-10-06 09:34:44 -0400 2688 2689 changes by Paul Eggert 2690 2691 2692Release 2003c - 2003-09-16 10:47:05 -0400 2693 2694 Fix bad returns in zic.c's inleap function. 2695 Thanks to Bradley White for catching the problem! 2696 2697 2698Release 2003b - 2003-09-16 07:13:44 -0400 2699 2700 Add a "--version" option (and documentation) to the zic and zdump commands. 2701 2702 changes to overflow/underflow checking in zic 2703 2704 a localtime typo fix. 2705 2706 Update the leapseconds and tz-art.htm files. 2707 2708 2709Release 2003a - 2003-03-24 09:30:54 -0500 2710 2711 changes by Paul Eggert 2712 2713 a few additions and modifications to the tz-art.htm file 2714 2715 2716Release 2002d - 2002-10-15 13:12:42 -0400 2717 2718 changes by Paul Eggert, less the "Britain (UK)" change in iso3166.tab 2719 2720 There's also a new time zone quote in "tz-art.htm". 2721 2722 2723Release 2002c - 2002-04-04 11:55:20 -0500 2724 2725 changes by Paul Eggert 2726 2727 Change zic.c to avoid creating symlinks to files that don't exist. 2728 2729 2730Release 2002b - 2002-01-28 12:56:03 -0500 2731 2732 [These change notes are for Release 2002a, which was corrupted. 2733 2002b was a corrected version of 2002a.] 2734 2735 changes by Paul Eggert 2736 2737 Update the "leapseconds" file to note that there'll be no leap 2738 second at the end of June, 2002. 2739 2740 Change "zic.c" to deal with a problem in handling the "Asia/Bishkek" zone. 2741 2742 Change to "difftime.c" to avoid sizeof problems. 2743 2744 2745Release 2001d - 2001-10-09 13:31:32 -0400 2746 2747 changes by Paul Eggert 2748 2749 2750Release 2001c - 2001-06-05 13:59:55 -0400 2751 2752 changes by Paul Eggert and Andrew Brown 2753 2754 2755Release 2001b - 2001-04-05 16:44:38 -0400 2756 2757 changes by Paul Eggert (modulo jnorgard's typo fix) 2758 2759 tz-art.htm has been HTMLified. 2760 2761 2762Release 2001a - 2001-03-13 12:57:44 -0500 2763 2764 changes by Paul Eggert 2765 2766 An addition to the "leapseconds" file: comments with the text of the 2767 latest IERS leap second notice. 2768 2769 Trailing white space has been removed from data file lines, and 2770 repeated spaces in "Rule Jordan" lines in the "asia" file have been 2771 converted to tabs. 2772 2773 2774Release 2000h - 2000-12-14 15:33:38 -0500 2775 2776 changes by Paul Eggert 2777 2778 one typo fix in the "art" file 2779 2780 With providence, this is the last update of the millennium. 2781 2782 2783Release 2000g - 2000-10-10 11:35:22 -0400 2784 2785 changes by Paul Eggert 2786 2787 correction of John Mackin's name submitted by Robert Elz 2788 2789 Garry Shandling's Daylight Saving Time joke (!?!) from the recent 2790 Emmy Awards broadcast. 2791 2792 2793Release 2000f - 2000-08-10 09:31:58 -0400 2794 2795 changes by Paul Eggert 2796 2797 Added information in "tz-art.htm" on a Seinfeld reference to DST. 2798 2799 Error checking and messages in the "yearistype" script have been 2800 improved. 2801 2802 2803Release 2000e - 2000-07-31 09:27:54 -0400 2804 2805 data changes by Paul Eggert 2806 2807 a change to the default value of the defined constant HAVE_STRERROR 2808 2809 the addition of a Dave Barry quote on DST to the tz-arts file 2810 2811 2812Release 2000d - 2000-04-20 15:43:04 -0400 2813 2814 changes to the documentation and code of strftime for C99 conformance 2815 2816 a bug fix for date.c 2817 2818 These are based on (though modified from) changes by Paul Eggert. 2819 2820 2821Release 2000c - 2000-03-04 10:31:43 -0500 2822 2823 changes by Paul Eggert 2824 2825 2826Release 2000b - 2000-02-21 12:16:29 -0500 2827 2828 changes by Paul Eggert and Joseph Myers 2829 2830 modest tweaks to the tz-art.htm and tz-link.htm files 2831 2832 2833Release 2000a - 2000-01-18 09:21:26 -0500 2834 2835 changes by Paul Eggert 2836 2837 The two hypertext documents have also been renamed. 2838 2839 2840Release code1999i-data1999j - 1999-11-15 18:43:22 -0500 2841 2842 Paul Eggert's changes 2843 2844 additions to the "zic" manual page and the "Arts.htm" file 2845 2846 2847Release code1999h-data1999i - 1999-11-08 14:55:21 -0500 2848 2849 [not summarized] 2850 2851 2852Release data1999h - 1999-10-07 03:50:29 -0400 2853 2854 changes by Paul Eggert to "europe" (most importantly, fixing 2855 Lithuania and Estonia) 2856 2857 2858Release 1999g - 1999-09-28 11:06:18 -0400 2859 2860 data changes by Paul Eggert (most importantly, the change for 2861 Lebanon that buys correctness for this coming Sunday) 2862 2863 The "code" file contains changes to "Makefile" and "checktab.awk" to 2864 allow better checking of time zone files before they are published. 2865 2866 2867Release 1999f - 1999-09-23 09:48:14 -0400 2868 2869 changes by Arthur David Olson and Paul Eggert 2870 2871 2872Release 1999e - 1999-08-17 15:20:54 -0400 2873 2874 changes circulated by Paul Eggert, although the change to handling 2875 of DST-specifying time zone names has been commented out for now 2876 (search for "XXX" in "localtime.c" for details). These files also 2877 do not make any changes to the start of DST in Brazil. 2878 2879 In addition to Paul's changes, there are updates to "Arts.htm" and 2880 cleanups of URLs. 2881 2882 2883Release 1999d - 1999-03-30 11:31:07 -0500 2884 2885 changes by Paul Eggert 2886 2887 The Makefile's "make public" rule has also been changed to do a test 2888 compile of each individual time zone data file (which should help 2889 avoid problems such as the one we had with Nicosia). 2890 2891 2892Release 1999c - 1999-03-25 09:47:47 -0500 2893 2894 changes by Paul Eggert, most importantly the change for Chile. 2895 2896 2897Release 1999b - 1999-02-01 17:51:44 -0500 2898 2899 changes by Paul Eggert 2900 2901 code changes (suggested by Mani Varadarajan, mani at be.com) for 2902 correct handling of symbolic links when building using a relative directory 2903 2904 code changes to generate correct messages for failed links 2905 2906 updates to the URLs in Arts.htm 2907 2908 2909Release 1999a - 1999-01-19 16:20:29 -0500 2910 2911 error message internationalizations and corrections in zic.c and 2912 zdump.c (as suggested by Vladimir Michl, vladimir.michl at upol.cz, 2913 to whom thanks!) 2914 2915 2916Release code1998h-data1998i - 1998-10-01 09:56:10 -0400 2917 2918 changes for Brazil, Chile, and Germany 2919 2920 support for use of "24:00" in the input files for the time zone compiler 2921 2922 2923Release code1998g-data1998h - 1998-09-24 10:50:28 -0400 2924 2925 changes by Paul Eggert 2926 2927 correction to a define in the "private.h" file 2928 2929 2930Release data1998g - 1998-08-11 03:28:35 -0000 2931 [tzdata1998g.tar.gz is missing!] 2932 2933 Lithuanian change provided by mgedmin at pub.osf.it 2934 2935 Move creation of the GMT link with Etc/GMT to "etcetera" (from 2936 "backward") to ensure that the GMT file is created even where folks 2937 don't want the "backward" links (as suggested by Paul Eggert). 2938 2939 2940Release data1998f - 1998-07-20 13:50:00 -0000 2941 [tzdata1998f.tar.gz is missing!] 2942 2943 Update the "leapseconds" file to include the newly-announced 2944 insertion at the end of 1998. 2945 2946 2947Release code1998f - 1998-06-01 10:18:31 -0400 2948 2949 addition to localtime.c by Guy Harris 2950 2951 2952Release 1998e - 1998-05-28 09:56:26 -0400 2953 2954 The Makefile is changed to produce zoneinfo-posix rather than 2955 zoneinfo/posix, and to produce zoneinfo-leaps rather than 2956 zoneinfo/right. 2957 2958 data changes by Paul Eggert 2959 2960 changes from Guy Harris to provide asctime_r and ctime_r 2961 2962 A usno1998 file (substantially identical to usno1997) has been added. 2963 2964 2965Release 1998d - 1998-05-14 11:58:34 -0400 2966 2967 changes to comments (in particular, elimination of references to CIA maps). 2968 "Arts.htm", "WWW.htm", "asia", and "australasia" are the only places 2969 where changes occur. 2970 2971 2972Release 1998c - 1998-02-28 12:32:26 -0500 2973 2974 changes by Paul Eggert (save the "French correction," on which I'll 2975 wait for the dust to settle) 2976 2977 symlink changes 2978 2979 changes and additions to Arts.htm 2980 2981 2982Release 1998b - 1998-01-17 14:31:51 -0500 2983 2984 URL cleanups and additions 2985 2986 2987Release 1998a - 1998-01-13 12:37:35 -0500 2988 2989 changes by Paul Eggert 2990 2991 2992Release code1997i-data1997k - 1997-12-29 09:53:41 -0500 2993 2994 changes by Paul Eggert, with minor modifications from Arthur David 2995 Olson to make the files more browser friendly 2996 2997 2998Release code1997h-data1997j - 1997-12-18 17:47:35 -0500 2999 3000 minor changes to put "TZif" at the start of each time zone information file 3001 3002 a rule has also been added to the Makefile so you can 3003 make zones 3004 to just recompile the zone information files (rather than doing a 3005 full "make install" with its other effects). 3006 3007 3008Release data1997i - 1997-10-07 08:45:38 -0400 3009 3010 changes to Africa by Paul Eggert 3011 3012 3013Release code1997g-data1997h - 1997-09-04 16:56:54 -0400 3014 3015 corrections for Uruguay (and other locations) 3016 3017 Arthur David Olson's simple-minded fix allowing mktime to both 3018 correctly handle leap seconds and correctly handle tm_sec values 3019 upon which arithmetic has been performed. 3020 3021 3022Release code1997f-data1997g - 1997-07-19 13:15:02 -0400 3023 3024 Paul Eggert's updates 3025 3026 a small change to a function prototype; 3027 3028 "Music" has been renamed "Arts.htm", HTMLified, and augmented to 3029 include information on Around the World in Eighty Days. 3030 3031 3032Release code1997e-data1997f - 1997-05-03 18:52:34 -0400 3033 3034 fixes to zic's error handling 3035 3036 changes inspired by the item circulated on Slovenia 3037 3038 The description of Web resources has been HTMLified for browsing 3039 convenience. 3040 3041 A new piece of tz-related music has been added to the "Music" file. 3042 3043 3044Release code1997d-data1997e - 1997-03-29 12:48:52 -0500 3045 3046 Paul Eggert's latest suggestions 3047 3048 3049Release code1997c-data1997d - 1997-03-07 20:37:54 -0500 3050 3051 changes to "zic.c" to correct performance of the "-s" option 3052 3053 a new file "usno1997" 3054 3055 3056Release data1997c - 1997-03-04 09:58:18 -0500 3057 3058 changes in Israel 3059 3060 3061Release 1997b - 1997-02-27 18:34:19 -0500 3062 3063 The data file incorporates the 1997 leap second. 3064 3065 The code file incorporates Arthur David Olson's take on the 3066 zic/multiprocessor/directory-creation situation. 3067 3068 3069Release 1997a - 1997-01-21 09:11:10 -0500 3070 3071 Paul Eggert's Antarctica (and other changes) 3072 3073 Arthur David Olson finessed the "getopt" issue by checking against 3074 both -1 and EOF (regardless of POSIX, SunOS 4.1.1's manual says -1 3075 is returned while SunOS 5.5's manual says EOF is returned). 3076 3077 3078Release code1996o-data1996n - 1996-12-27 21:42:05 -0500 3079 3080 Paul Eggert's latest changes 3081 3082 3083Release code1996n - 1996-12-16 09:42:02 -0500 3084 3085 link snapping fix from Bruce Evans (via Garrett Wollman) 3086 3087 3088Release data1996m - 1996-11-24 02:37:34 -0000 3089 [tzdata1996m.tar.gz is missing!] 3090 3091 Paul Eggert's batch of changes 3092 3093 3094Release code1996m-data1996l - 1996-11-05 14:00:12 -0500 3095 3096 No functional changes here; the files have simply been changed to 3097 make more use of ISO style dates in comments. The names of the above 3098 files now include the year in full. 3099 3100 3101Release code96l - 1996-09-08 17:12:20 -0400 3102 3103 tzcode96k was missing a couple of pieces. 3104 3105 3106Release 96k - 1996-09-08 16:06:22 -0400 3107 3108 the latest round of changes from Paul Eggert 3109 3110 the recent Year 2000 material 3111 3112 3113Release code96j - 1996-07-30 13:18:53 -0400 3114 3115 Set sp->typecnt as suggested by Timothy Patrick Murphy. 3116 3117 3118Release code96i - 1996-07-27 20:11:35 -0400 3119 3120 Paul's suggested patch for strftime %V week numbers 3121 3122 3123Release data96i - 1996-07-01 18:13:04 -0400 3124 3125 "northamerica" and "europe" changes by Paul Eggert 3126 3127 3128Release code96h - 1996-06-05 08:02:21 -0400 3129 3130 fix for handling transitions specified in Universal Time 3131 3132 Some "public domain" notices have also been added. 3133 3134 3135Release code96g - 1996-05-16 14:00:26 -0400 3136 3137 fix for the simultaneous-DST-and-zone-change challenge 3138 3139 3140Release data96h - 1996-05-09 17:40:51 -0400 3141 3142 changes by Paul Eggert 3143 3144 3145Release code96f-data96g - 1996-05-03 03:09:59 -0000 3146 [tzcode96f.tar.gz + tzdata96g.tar.gz are both missing!] 3147 3148 The changes get us some of the way to fixing the problems noted in Paul 3149 Eggert's letter yesterday (in addition to a few others). The approach 3150 has been to make zic a bit smarter about figuring out what time zone 3151 abbreviations apply just after the time specified in the "UNTIL" part 3152 of a zone line. Putting the smarts in zic means avoiding having 3153 transition times show up in both "Zone" lines and "Rule" lines, which 3154 in turn avoids multiple transition time entries in time zone files. 3155 (This also makes the zic input files such as "europe" a bit shorter and 3156 should ease maintenance.) 3157 3158 3159Release data96f - 1996-04-19 19:20:03 -0000 3160 [tzdata96f.tar.gz is missing!] 3161 3162 The only changes are to the "northamerica" file; the time zone 3163 abbreviation for Denver is corrected to MST (and MDT), and the 3164 comments for Mexico have been updated. 3165 3166 3167Release data96e - 1996-03-19 17:37:26 -0500 3168 3169 Proposals by Paul Eggert, in particular the Portugal change that 3170 comes into play at the end of this month. 3171 3172 3173Release data96d - 1996-03-18 20:49:39 -0500 3174 3175 [not summarized] 3176 3177 3178Release code96e - 1996-02-29 15:43:27 -0000 3179 [tzcode96e.tar.gz is missing!] 3180 3181 internationalization changes and the fix to the documentation for strftime 3182 3183 3184Release code96d-data96c - 1996-02-12 11:05:27 -0500 3185 3186 The "code" file simply updates Bob Kridle's electronic address. 3187 3188 The "data" file updates rules for Mexico. 3189 3190 3191Release data96b - 1996-01-27 15:44:42 -0500 3192 3193 Kiribati change 3194 3195 3196Release code96c - 1996-01-16 16:58:15 -0500 3197 3198 leap-year streamlining and binary-search changes 3199 3200 fix to newctime.3 3201 3202 3203Release code96b - 1996-01-10 20:42:39 -0500 3204 3205 fixes and enhancements from Paul Eggert, including code that 3206 emulates the behavior of recent versions of the SunOS "date" 3207 command. 3208 3209 3210Release 96a - 1996-01-06 09:08:24 -0500 3211 3212 Israel updates 3213 3214 fixes to strftime.c for correct ISO 8601 week number generation, 3215 plus support for two new formats ('G' and 'g') to give ISO 8601 year 3216 numbers (which are not necessarily the same as calendar year numbers) 3217 3218 3219Release code95i-data95m - 1995-12-21 12:46:47 -0500 3220 3221 The latest revisions from Paul Eggert are included, the usno1995 3222 file has been updated, and a new file ("WWW") covering useful URLs 3223 has been added. 3224 3225 3226Release code95h-data95l - 1995-12-19 18:10:12 -0500 3227 3228 A simplification of a macro definition, a change to data for Sudan, 3229 and (for last minute shoppers) notes in the "Music" file on the CD 3230 "Old Man Time". 3231 3232 3233Release code95g-data95k - 1995-10-30 10:32:47 -0500 3234 3235 (slightly reformatted) 8-bit-clean proposed patch 3236 3237 minor patch: US/Eastern -> America/New_York 3238 3239 snapshot of the USNO's latest data ("usno1995") 3240 3241 some other minor cleanups 3242 3243 3244Release code95f-data95j - 1995-10-28 21:01:34 -0000 3245 [tzcode95f.tar.gz + tzdata95j.tar.gz are both missing!] 3246 3247 European cleanups 3248 3249 support for 64-bit time_t's 3250 3251 optimization in localtime.c 3252 3253 3254Release code95e - 1995-10-13 13:23:57 -0400 3255 3256 the mktime change to scan from future to past when trying to find time zone 3257 offsets 3258 3259 3260Release data95i - 1995-09-26 10:43:26 -0400 3261 3262 For Canada/Central, guess that the Sun customer's "one week too 3263 early" was just a approximation, and the true error is one month 3264 too early. This is consistent with the rest of Canada. 3265 3266 3267Release data95h - 1995-09-21 11:26:48 -0400 3268 3269 latest changes from Paul Eggert 3270 3271 3272Release code95d - 1995-09-14 11:14:45 -0400 3273 3274 the addition of a "Music" file, which documents four recorded 3275 versions of the tune "Save That Time". 3276 3277 3278Release data95g - 1995-09-01 17:21:36 -0400 3279 3280 "yearistype" correction 3281 3282 3283Release data95f - 1995-08-28 20:46:56 -0400 3284 3285 Paul Eggert's change to the australasia file 3286 3287 3288Release data95e - 1995-07-08 18:02:34 -0400 3289 3290 The only change is a leap second at the end of this year. 3291 Thanks to Bradley White for forwarding news on the leap second. 3292 3293 3294Release data95d - 1995-07-03 13:26:22 -0400 3295 3296 Paul Eggert's changes 3297 3298 3299Release data95c - 1995-07-02 19:19:28 -0400 3300 3301 changes to "asia", "backward", "europe", and "southamerica" 3302 (read: northamericacentrics need not apply) 3303 3304 3305Release code95c - 1995-03-13 14:00:46 -0500 3306 3307 one-line fix for sign extension problems in detzcode 3308 3309 3310Release 95b - 1995-03-04 11:22:38 -0500 3311 3312 Minor changes in both: 3313 3314 The "code" file contains a workaround for the lack of "unistd.h" in 3315 Microsoft C++ version 7. 3316 3317 The "data" file contains a fixed "Link" for America/Shiprock. 3318 3319 3320Release 94h - 1994-12-10 12:51:14 -0500 3321 3322 The files: 3323 3324 * incorporate the changes to "zdump" and "date" to make changes to 3325 the "TZ" environment variable permanent; 3326 3327 * incorporate the table changes by Paul Eggert; 3328 3329 * include (and document) support for universal time specifications in 3330 data files - but do not (yet) include use of this feature in the 3331 data files. 3332 3333 Think of this as "TZ Classic" - the software has been set up not to break if 3334 universal time shows up in its input, and data entries have been 3335 left as is so as not to break existing implementations. 3336 3337 3338Release data94f - 1994-08-20 12:56:09 -0400 3339 3340 (with thanks!) the latest data updates from Paul Eggert 3341 3342 3343Release data94e - 1994-06-04 13:13:53 -0400 3344 3345 [not summarized] 3346 3347 3348Release code94g - 1994-05-05 12:14:07 -0400 3349 3350 fix missing "optind.c" and a reference to it in the Makefile 3351 3352 3353Release code94f - 1994-05-05 13:00:33 -0000 3354 [tzcode94f.tar.gz is missing!] 3355 3356 changes to avoid overflow in difftime, as well as changes to cope 3357 with the 52/53 challenge in strftime 3358 3359 3360Release code94e - 1994-03-30 23:32:59 -0500 3361 3362 change for the benefit of PCTS 3363 3364 3365Release 94d - 1994-02-24 15:42:25 -0500 3366 3367 Avoid clashes with POSIX semantics for zones such as GMT+4. 3368 3369 Some other very minor housekeeping is also present. 3370 3371 3372Release code94c - 1994-02-10 08:52:40 -0500 3373 3374 Fix bug where mkdirs was broken unless you compile with 3375 -fwritable-strings (which is generally losing to do). 3376 3377 3378Release 94b - 1994-02-07 10:04:33 -0500 3379 3380 work by Paul Eggert who notes: 3381 3382 I found another book of time zone histories by E W Whitman; it's not 3383 as extensive as Shanks but has a few goodies of its own. I used it 3384 to update the tables. I also fixed some more as a result of 3385 correspondence with Adam David and Peter Ilieve, and move some stray 3386 links from 'europe' to 'backward'. I corrected some scanning errors 3387 in usno1989. 3388 3389 As far as the code goes, I fixed zic to allow years in the range 3390 INT_MIN to INT_MAX; this fixed a few boundary conditions around 1900. 3391 And I cleaned up the zic documentation a little bit. 3392 3393 3394Release data94a - 1994-02-03 08:58:54 -0500 3395 3396 It simply incorporates the recently announced leap second into the 3397 "leapseconds" file. 3398 3399 3400Release 93g - 1993-11-22 17:28:27 -0500 3401 3402 Paul Eggert has provided a good deal of historic information (based 3403 on Shanks), and there are some code changes to deal with the buglets 3404 that crawled out in dealing with the new information. 3405 3406 3407Release 93f - 1993-10-15 12:27:46 -0400 3408 3409 Paul Eggert's changes 3410 3411 3412Release 93e - 1993-09-05 21:21:44 -0400 3413 3414 This has updated data for Israel, England, and Kwajalein. There's 3415 also an update to "zdump" to cope with Kwajalein's 24-hour jump. 3416 Thanks to Paul Eggert and Peter Ilieve for the changes. 3417 3418 3419Release 93d - 1993-06-17 23:34:17 -0400 3420 3421 new fix and new data on Israel 3422 3423 3424Release 93c - 1993-06-06 19:31:55 -0400 3425 3426 [not summarized] 3427 3428 3429Release 93b - 1993-02-02 14:53:58 -0500 3430 3431 updated "leapseconds" file 3432 3433 3434Release 93 - 1993-01-08 07:01:06 -0500 3435 3436 At kre's suggestion, the package has been split in two - a code piece 3437 (which also includes documentation) that's only of use to folks who 3438 want to recompile things and a data piece useful to anyone who can 3439 run "zic". 3440 3441 The new version has a few changes to the data files, a few 3442 portability changes, and an off-by-one fix (with thanks to 3443 Tom Karzes at deshaw.com for providing a description and a 3444 solution). 3445 3446 3447Release 92c - 1992-11-21 17:35:36 -0000 3448 [tz92c.tar.Z is missing!] 3449 3450 The fallout from the latest round of DST transitions. 3451 3452 There are changes for Portugal, Saskatchewan, and "Pacific-New"; 3453 there's also a change to "zic.c" that makes it portable to more systems. 3454 3455 3456Release 92 - 1992-04-25 18:17:03 -0000 3457 [tz92.tar.Z is missing!] 3458 3459 By popular demand (well, at any rate, following a request by kre at munnari) 3460 3461 3462The 1989 update of the time zone package featured: 3463 3464 * POSIXization (including interpretation of POSIX-style TZ environment 3465 variables, provided by Guy Harris), 3466 * ANSIfication (including versions of "mktime" and "difftime"), 3467 * SVIDulation (an "altzone" variable) 3468 * MACHination (the "gtime" function) 3469 * corrections to some time zone data (including corrections to the rules 3470 for Great Britain and New Zealand) 3471 * reference data from the United States Naval Observatory for folks who 3472 want to do additional time zones 3473 * and the 1989 data for Saudi Arabia. 3474 3475 (Since this code will be treated as "part of the implementation" in some 3476 places and as "part of the application" in others, there's no good way to 3477 name functions, such as timegm, that are not part of the proposed ANSI C 3478 standard; such functions have kept their old, underscore-free names in this 3479 update.) 3480 3481 And the "dysize" function has disappeared; it was present to allow 3482 compilation of the "date" command on old BSD systems, and a version of "date" 3483 is now provided in the package. The "date" command is not created when you 3484 "make all" since it may lack options provided by the version distributed with 3485 your operating system, or may not interact with the system in the same way 3486 the native version does. 3487 3488 Since POSIX frowns on correct leap second handling, the default behavior of 3489 the "zic" command (in the absence of a "-L" option) has been changed to omit 3490 leap second information from its output files. 3491 3492 3493----- 3494Notes 3495 3496This file contains copies of the part of each release announcement 3497that talks about the changes in that release. The text has been 3498adapted and reformatted for the purposes of this file. 3499 3500Typically a release R consists of a pair of tarball files, 3501tzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g., 3502code2010a, data2012c) consist of just one or the other tarball, and a 3503few (e.g., code2012c-data2012d) have tarballs with mixed version 3504numbers. 3505 3506Release time stamps are taken from the release's commit (for newer, 3507git releases), from the newest file in the tarball (for older 3508releases, where this info is available) or from the email announcing 3509the release (if all else fails; these are marked with a time zone of 3510-0000 and an "is missing!" comment). 3511 3512Earlier versions of the code and data were not announced on the tz 3513list and are not summarized here. 3514 3515This file is in the public domain. 3516 3517Local Variables: 3518coding: utf-8 3519End: 3520